/* ============================================================================
   ASTRA AI DESIGN SYSTEM (astra.css)
   Ultra-modern, high-converting, fluid SaaS UI/UX for Matematika 6. razred
   Inspired by Astra AI, Linear, and Raycast
   ============================================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&family=JetBrains+Mono:wght@500;700&display=swap');

:root,
html[data-theme="light"] {
    color-scheme: light;
    
    /* Backgrounds & Meshes */
    --bg-page: #f8fafc;
    --bg-mesh-1: rgba(99, 102, 241, 0.08);
    --bg-mesh-2: rgba(168, 85, 247, 0.06);
    --bg-mesh-3: rgba(59, 130, 246, 0.04);
    
    /* Bento Glass Cards */
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --bg-subtle: rgba(241, 245, 249, 0.7);
    --bg-input: #ffffff;
    
    /* Text Hierarchy */
    --text-main: #090d16;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --text-inverted: #ffffff;
    
    /* Borders & Glass Dividers */
    --border-color: rgba(226, 232, 240, 0.9);
    --border-soft: rgba(241, 245, 249, 0.8);
    --border-glow: rgba(99, 102, 241, 0.3);
    
    /* Vibrant Neon & SaaS Brand Accents */
    --primary: #4f46e5;
    --primary-glow: rgba(79, 70, 229, 0.35);
    --primary-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --primary-light: rgba(99, 102, 241, 0.1);
    
    --accent-cyan: #06b6d4;
    --accent-emerald: #10b981;
    --emerald-glow: rgba(16, 185, 129, 0.3);
    --emerald-light: rgba(16, 185, 129, 0.12);
    
    --accent-amber: #f59e0b;
    --amber-glow: rgba(245, 158, 11, 0.35);
    --amber-gradient: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --amber-light: rgba(245, 158, 11, 0.12);
    
    --accent-rose: #f43f5e;
    --rose-light: rgba(244, 63, 94, 0.12);
    
    /* Shadows & Elevations */
    --shadow-subtle: 0 4px 12px -2px rgba(15, 23, 42, 0.04);
    --shadow-card: 0 20px 40px -15px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.03), inset 0 1px 0 rgba(255, 255, 255, 0.9);
    --shadow-card-hover: 0 25px 50px -12px rgba(79, 70, 229, 0.12), 0 0 20px -5px rgba(99, 102, 241, 0.15), inset 0 1px 0 rgba(255, 255, 255, 1);
    --shadow-neon-btn: 0 6px 20px -3px rgba(79, 70, 229, 0.45);
    
    /* Radii */
    --radius-bento: 24px;
    --radius-pill: 9999px;
    --radius-btn: 14px;
    --radius-input: 12px;
    
    /* Fonts */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

html[data-theme="dark"] {
    color-scheme: dark;
    
    /* Backgrounds & Meshes */
    --bg-page: #07090e;
    --bg-mesh-1: rgba(99, 102, 241, 0.16);
    --bg-mesh-2: rgba(139, 92, 246, 0.12);
    --bg-mesh-3: rgba(14, 165, 233, 0.08);
    
    /* Bento Glass Cards */
    --bg-card: rgba(15, 23, 42, 0.65);
    --bg-card-hover: rgba(30, 41, 59, 0.75);
    --bg-subtle: rgba(30, 41, 59, 0.5);
    --bg-input: rgba(15, 23, 42, 0.85);
    
    /* Text Hierarchy */
    --text-main: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-inverted: #07090e;
    
    /* Borders & Glass Dividers */
    --border-color: rgba(255, 255, 255, 0.08);
    --border-soft: rgba(255, 255, 255, 0.04);
    --border-glow: rgba(99, 102, 241, 0.5);
    
    /* Vibrant Neon Accents */
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.5);
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --primary-light: rgba(99, 102, 241, 0.2);
    
    --accent-cyan: #38bdf8;
    --accent-emerald: #34d399;
    --emerald-glow: rgba(52, 211, 153, 0.4);
    --emerald-light: rgba(16, 185, 129, 0.2);
    
    --accent-amber: #fbbf24;
    --amber-glow: rgba(251, 191, 36, 0.45);
    --amber-gradient: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --amber-light: rgba(245, 158, 11, 0.22);
    
    --accent-rose: #fb7185;
    --rose-light: rgba(244, 63, 94, 0.22);
    
    /* Shadows & Elevations */
    --shadow-subtle: 0 4px 12px -2px rgba(0, 0, 0, 0.3);
    --shadow-card: 0 20px 40px -15px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    --shadow-card-hover: 0 25px 50px -12px rgba(99, 102, 241, 0.25), 0 0 25px -5px rgba(99, 102, 241, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    --shadow-neon-btn: 0 6px 24px -2px rgba(99, 102, 241, 0.55);
}

/* Base Reset & Smooth Fluid Canvas */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-page);
    background-image: 
        radial-gradient(circle at 50% -10%, var(--bg-mesh-1) 0%, transparent 60%),
        radial-gradient(circle at 15% 25%, var(--bg-mesh-2) 0%, transparent 45%),
        radial-gradient(circle at 85% 70%, var(--bg-mesh-3) 0%, transparent 50%),
        radial-gradient(rgba(148, 163, 184, 0.08) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 100% 100%, 28px 28px;
    background-attachment: fixed;
    color: var(--text-main);
    line-height: 1.65;
    min-height: 100vh;
    font-size: 15px;
}

/* Typography Hierarchy (Astra Style) */
h1, h2, h3, h4 {
    font-family: var(--font-sans);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.25;
    color: var(--text-main);
}

h1 { font-size: 1.55rem; }
h2 { font-size: 1.35rem; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }

p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--bg-subtle);
    color: var(--text-main);
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 8px;
    border: 1px solid var(--border-soft);
}

/* ==================== ASTRA HEADER (STICKY GLASS) ==================== */
.top-header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.03);
    transition: all 0.3s ease;
}

.header-inner {
    max-width: 1560px;
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.brand-group {
    display: flex;
    align-items: center;
    gap: 14px;
}

.hub-back-link, .grade-switch-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.84rem;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.hub-back-link:hover, .grade-switch-link:hover {
    transform: translateY(-2px);
    background: var(--primary-light);
    border-color: var(--primary-glow);
    color: var(--primary);
}

.brand-title-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-icon {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: var(--primary-gradient);
    color: #fff;
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-neon-btn);
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.brand-icon:hover {
    transform: scale(1.08) rotate(5deg);
}

.brand-topline {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 2px;
}

.grade-badge {
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    background: var(--primary-light);
    color: var(--primary);
    padding: 3px 9px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--primary-glow);
}

.student-badge {
    font-size: 0.72rem;
    font-weight: 800;
    background: var(--emerald-light);
    color: var(--accent-emerald);
    padding: 3px 9px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--emerald-glow);
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    background: linear-gradient(135deg, var(--text-main) 40%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Header Stats Bar & Glass Pills */
.header-stats-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.stat-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 15px;
    border-radius: var(--radius-pill);
    font-weight: 800;
    font-size: 0.88rem;
    backdrop-filter: blur(12px);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.stat-pill:hover {
    transform: translateY(-2px) scale(1.03);
}

.stars-pill {
    background: var(--amber-light);
    color: var(--accent-amber);
    border: 1px solid var(--amber-glow);
}

.streak-pill {
    background: var(--emerald-light);
    color: var(--accent-emerald);
    border: 1px solid var(--emerald-glow);
}

.icon-action-btn {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-subtle);
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.icon-action-btn:hover {
    transform: translateY(-2px);
    background: var(--primary-light);
    border-color: var(--primary-glow);
}

.mentor-header-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--primary-glow);
    background: var(--primary-gradient);
    color: #ffffff;
    font-weight: 800;
    font-size: 0.86rem;
    cursor: pointer;
    box-shadow: var(--shadow-neon-btn);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.mentor-header-btn:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 8px 25px -2px rgba(99, 102, 241, 0.6);
}

.status-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 10px #10b981;
    animation: statusPulse 2s infinite ease-in-out;
}

@keyframes statusPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.25); opacity: 0.7; }
}

/* ==================== NOTATION STRIP (SUBTLE TICKER) ==================== */
.notation-strip {
    background: var(--bg-subtle);
    border-bottom: 1px solid var(--border-soft);
    padding: 9px 24px;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.notation-strip-inner {
    max-width: 1560px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 12px 20px;
    flex-wrap: wrap;
}

.notation-item code {
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid var(--border-soft);
    color: var(--primary);
    font-weight: 700;
}

html[data-theme="dark"] .notation-item code {
    background: rgba(15, 23, 42, 0.6);
}

/* ==================== ASTRA BENTO MODULE NAVIGATION ==================== */
.module-nav-wrapper {
    max-width: 1560px;
    margin: 0 auto;
    padding: 14px 24px 18px;
}

.module-nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 10px;
}

.module-tab {
    padding: 12px 14px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.84rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: left;
    line-height: 1.25;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: var(--shadow-subtle);
}

.module-tab:hover {
    border-color: var(--primary-glow);
    background: var(--bg-card-hover);
    color: var(--text-main);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -8px rgba(99, 102, 241, 0.2);
}

.module-tab.active {
    background: var(--primary-gradient);
    color: #ffffff;
    border-color: transparent;
    box-shadow: var(--shadow-neon-btn);
    transform: translateY(-2px);
}

.module-tab.module-tab-generalka {
    border: 1.5px solid var(--accent-amber);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(239, 68, 68, 0.08));
}

.module-tab.module-tab-generalka.active {
    background: var(--amber-gradient);
    color: #ffffff;
    box-shadow: 0 6px 24px -2px rgba(245, 158, 11, 0.55);
}

.tab-num {
    width: 28px;
    height: 28px;
    min-width: 28px;
    border-radius: 10px;
    background: var(--bg-subtle);
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.82rem;
    font-weight: 800;
    transition: all 0.2s ease;
}

.module-tab.active .tab-num {
    background: rgba(255, 255, 255, 0.24);
    color: #ffffff;
}

/* ==================== WORKSPACE SHELL & FLUID BREATHING ROOM ==================== */
.workspace-shell {
    max-width: 1560px;
    margin: 24px auto;
    padding: 0 24px 80px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

.chapter-stepper-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 20px;
    border-radius: var(--radius-bento);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-card);
    margin-bottom: 8px;
}

.stepper-btn {
    padding: 9px 18px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-color);
    background: var(--bg-subtle);
    color: var(--text-main);
    font-weight: 700;
    font-size: 0.86rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.stepper-btn:hover {
    transform: translateY(-2px);
    border-color: var(--primary-glow);
    background: var(--primary-light);
    color: var(--primary);
}

.chapter-stepper-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 0.94rem;
}

.select-input {
    padding: 8px 14px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-input);
    color: var(--text-main);
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.select-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* ==================== ASTRA BENTO CARDS & SECTIONS ==================== */
.module-section {
    display: none;
    animation: astraFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.module-section.active {
    display: block;
}

@keyframes astraFadeIn {
    from { opacity: 0; transform: translateY(12px) scale(0.995); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.section-banner {
    padding: 28px 32px;
    border-radius: var(--radius-bento);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-card);
    margin-bottom: 28px;
    position: relative;
    overflow: hidden;
}

.section-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
}

.chapter-tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid var(--primary-glow);
    margin-bottom: 10px;
}

.section-banner h2 {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-bento);
    padding: 28px 32px;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    margin-bottom: 28px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
}

.subcard {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 20px 24px;
    margin-top: 16px;
    transition: all 0.2s ease;
}

.card-header-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.94rem;
    line-height: 1.65;
    margin-bottom: 16px;
}

/* Asymmetric Bento Grids */
.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 28px;
}

@media (max-width: 960px) {
    .grid-2-col {
        grid-template-columns: 1fr;
    }
}

.grid-3-col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 960px) {
    .grid-3-col {
        grid-template-columns: 1fr;
    }
}

/* ==================== HIGH-CONVERTING NEON CTA BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-btn);
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    line-height: 1;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: var(--shadow-neon-btn);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 10px 28px -2px rgba(99, 102, 241, 0.6);
}

.btn-primary:active {
    transform: translateY(0px) scale(0.98);
}

.btn-secondary {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: #ffffff;
    box-shadow: 0 6px 20px -3px rgba(16, 185, 129, 0.45);
}

.btn-secondary:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 10px 28px -2px rgba(16, 185, 129, 0.6);
}

.btn-outline {
    background: var(--bg-subtle);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(8px);
}

.btn-outline:hover {
    transform: translateY(-2px);
    border-color: var(--primary-glow);
    background: var(--primary-light);
    color: var(--primary);
}

.btn-sm {
    padding: 7px 14px;
    font-size: 0.82rem;
    border-radius: 10px;
}

.btn-xs {
    padding: 5px 10px;
    font-size: 0.78rem;
    border-radius: 8px;
}

/* Inputs & Form Controls */
.form-input, .input-num {
    padding: 10px 16px;
    border-radius: var(--radius-input);
    border: 1px solid var(--border-color);
    background: var(--bg-input);
    color: var(--text-main);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    outline: none;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.form-input:focus, .input-num:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3.5px var(--primary-light);
}

.inline-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

/* ==================== INTERACTIVE WIDGET ENHANCEMENTS ==================== */
/* 1. Trojice Grid (Zapis števil) */
.triplets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
    margin: 20px 0;
}

.triplet-card {
    padding: 16px;
    border-radius: 18px;
    background: var(--bg-subtle);
    border: 1.5px solid var(--border-color);
    text-align: center;
    transition: all 0.25s ease;
}

.triplet-card:hover {
    transform: translateY(-2px);
    border-color: var(--primary-glow);
}

.triplet-name {
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 6px;
}

.triplet-digits {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: 0.1em;
}

/* Orthography Cards (SKUPAJ vs. NARAZEN) */
.orthography-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 24px;
}

@media (max-width: 768px) {
    .orthography-grid {
        grid-template-columns: 1fr;
    }
}

.ortho-card {
    padding: 22px;
    border-radius: 20px;
    border: 1.5px solid transparent;
    transition: all 0.25s ease;
}

.ortho-card.together {
    background: var(--emerald-light);
    border-color: var(--emerald-glow);
}

.ortho-card.apart {
    background: var(--primary-light);
    border-color: var(--primary-glow);
}

.ortho-badge {
    display: inline-block;
    font-size: 0.74rem;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    margin-bottom: 8px;
    background: rgba(255, 255, 255, 0.6);
}

html[data-theme="dark"] .ortho-badge {
    background: rgba(15, 23, 42, 0.6);
}

/* Callouts & Feedback Banners */
.callout {
    padding: 18px 22px;
    border-radius: 16px;
    margin: 18px 0;
    font-size: 0.94rem;
    border: 1px solid transparent;
}

.callout-info {
    background: var(--primary-light);
    border-color: var(--primary-glow);
    color: var(--text-main);
}

.feedback-banner {
    padding: 14px 18px;
    border-radius: 14px;
    margin-top: 14px;
    font-weight: 700;
    font-size: 0.92rem;
    animation: astraFadeIn 0.25s ease;
}

.feedback-banner.success {
    background: var(--emerald-light);
    border: 1px solid var(--emerald-glow);
    color: var(--accent-emerald);
}

.feedback-banner.error {
    background: var(--rose-light);
    border: 1px solid rgba(244, 63, 94, 0.4);
    color: var(--accent-rose);
}

/* Task Prompt Box */
.task-prompt-box {
    padding: 18px 22px;
    border-radius: 16px;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    font-size: 1.05rem;
    font-weight: 700;
    margin: 14px 0;
}

/* ==================== GENERALKA ZA TEST (BENTO EXAM SYSTEM) ==================== */
.generalka-shell {
    padding: 32px;
    border-radius: var(--radius-bento);
    background: var(--bg-card);
    border: 1.5px solid var(--accent-amber);
    box-shadow: 0 25px 60px -15px rgba(245, 158, 11, 0.15);
}

.generalka-header-bento {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-soft);
    margin-bottom: 28px;
}

.pola-tabs-container {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-subtle);
    padding: 6px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-color);
}

.pola-tab-btn {
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.88rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.pola-tab-btn.active {
    background: var(--amber-gradient);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}

.exam-task-card {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 22px 26px;
    margin-bottom: 20px;
    transition: all 0.25s ease;
}

.exam-task-card:hover {
    border-color: var(--amber-glow);
    transform: translateY(-2px);
}

.exam-task-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.exam-task-badge {
    font-size: 0.74rem;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    background: var(--amber-light);
    color: var(--accent-amber);
    border: 1px solid var(--amber-glow);
}

/* ==================== ASTRA FLOATING AI MENTOR DRAWER & FAB ==================== */
.floating-mentor-fab {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 100;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: var(--primary-gradient);
    color: #ffffff;
    font-family: var(--font-sans);
    font-weight: 800;
    font-size: 0.92rem;
    cursor: pointer;
    box-shadow: 0 10px 30px -5px rgba(99, 102, 241, 0.6);
    backdrop-filter: blur(16px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.floating-mentor-fab:hover {
    transform: translateY(-3px) scale(1.04);
    box-shadow: 0 16px 36px -4px rgba(99, 102, 241, 0.75);
}

.floating-mentor-fab:active {
    transform: translateY(0) scale(0.98);
}

.fab-avatar {
    font-size: 1.3rem;
}

.fab-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 8px #10b981;
}

.mentor-drawer {
    position: fixed;
    bottom: 96px;
    right: 28px;
    width: 440px;
    max-width: calc(100vw - 36px);
    max-height: 80vh;
    z-index: 99;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-bento);
    backdrop-filter: blur(28px) saturate(180%);
    -webkit-backdrop-filter: blur(28px) saturate(180%);
    box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.4), 0 0 30px -5px rgba(99, 102, 241, 0.25);
    display: none;
    flex-direction: column;
    overflow: hidden;
    animation: astraDrawerSlide 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mentor-drawer.mobile-open {
    display: flex;
}

@keyframes astraDrawerSlide {
    from { opacity: 0; transform: translateY(20px) scale(0.96); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.mentor-header {
    padding: 18px 22px;
    border-bottom: 1px solid var(--border-soft);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-subtle);
}

.mentor-chat-stream {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-height: 400px;
}

.mentor-msg {
    padding: 12px 18px;
    border-radius: 18px;
    font-size: 0.9rem;
    line-height: 1.55;
    max-width: 88%;
}

.mentor-msg.ai {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.mentor-msg.user {
    background: var(--primary-gradient);
    color: #ffffff;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.mentor-quick-chips {
    display: flex;
    gap: 8px;
    padding: 10px 18px;
    overflow-x: auto;
    border-top: 1px solid var(--border-soft);
    background: var(--bg-card);
}

.chip-prompt {
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-color);
    background: var(--bg-subtle);
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
}

.chip-prompt:hover {
    border-color: var(--primary-glow);
    background: var(--primary-light);
    color: var(--primary);
    transform: translateY(-1px);
}

.mentor-chat-form {
    padding: 14px 18px;
    border-top: 1px solid var(--border-soft);
    display: flex;
    gap: 10px;
    background: var(--bg-card);
}

.mentor-chat-input {
    flex: 1;
    padding: 10px 16px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-color);
    background: var(--bg-input);
    color: var(--text-main);
    font-size: 0.9rem;
    outline: none;
}

.mentor-chat-input:focus {
    border-color: var(--primary);
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 768px) {
    .header-inner {
        padding: 10px 16px;
    }
    .brand-title {
        font-size: 1.05rem;
    }
    .workspace-shell {
        padding: 0 14px 60px;
    }
    .card {
        padding: 20px 18px;
        border-radius: 20px;
    }
    .floating-mentor-fab {
        bottom: 18px;
        right: 18px;
        padding: 10px 16px;
    }
    .mentor-drawer {
        bottom: 80px;
        right: 14px;
        left: 14px;
        width: auto;
    }
}

/* ==================== ASTRA SPECIFIC WIDGET OVERRIDES ==================== */

/* Word Chips Pool (Poglavje 1) */
.word-chips-pool {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 16px;
    border-radius: 18px;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    margin: 14px 0;
}

.word-chip-btn {
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 0.86rem;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.word-chip-btn:hover {
    transform: translateY(-2px) scale(1.03);
    border-color: var(--primary-glow);
    background: var(--primary-light);
    color: var(--primary);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.word-chip-btn:active {
    transform: translateY(0) scale(0.97);
}

/* Place Value Table (Poglavje 2) */
.pvt-grid-wrap {
    overflow-x: auto;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    box-shadow: var(--shadow-subtle);
    margin: 18px 0;
}

.pvt-cell {
    padding: 12px 10px;
    text-align: center;
    border: 1px solid var(--border-soft);
    font-family: var(--font-mono);
    font-weight: 800;
    font-size: 1.1rem;
    transition: all 0.2s ease;
}

.pvt-cell.highlight {
    background: var(--primary-light);
    color: var(--primary);
}

/* Rounding Simulator (Poglavje 4) */
.round-slider-wrap {
    padding: 24px;
    border-radius: 20px;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    margin: 18px 0;
}

/* Generalka Pola A, B, C Tabs & Task Cards */
.variant-btn-group {
    display: inline-flex;
    gap: 6px;
    background: var(--bg-subtle);
    padding: 4px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--border-color);
}

.btn-gen-variant {
    font-size: 0.82rem;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    font-weight: 800;
    cursor: pointer;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-gen-variant:hover {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.08);
}

.btn-gen-variant.active {
    background: var(--amber-gradient) !important;
    color: #ffffff !important;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.45);
}

.generalka-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 24px;
    box-shadow: var(--shadow-card);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.generalka-card:hover {
    border-color: var(--amber-glow);
    transform: translateY(-2px);
    box-shadow: 0 16px 36px -10px rgba(245, 158, 11, 0.18);
}

.generalka-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-soft);
    padding-bottom: 12px;
}

.generalka-pts-badge {
    background: var(--amber-light);
    border: 1px solid var(--amber-glow);
    color: var(--accent-amber);
    border-radius: var(--radius-pill);
    padding: 4px 12px;
    font-weight: 800;
    font-size: 0.82rem;
}

.generalka-grade-box {
    background: var(--bg-card);
    border: 2px solid var(--accent-amber);
    border-radius: 24px;
    padding: 32px;
    text-align: center;
    margin-top: 28px;
    box-shadow: 0 20px 50px -10px rgba(245, 158, 11, 0.25);
    backdrop-filter: blur(20px);
}

.generalka-grade-big {
    font-family: var(--font-sans);
    font-size: 3.5rem;
    font-weight: 900;
    margin: 12px 0;
    letter-spacing: -0.04em;
}

.generalka-grade-1 { color: #f43f5e; text-shadow: 0 0 20px rgba(244, 63, 94, 0.4); }
.generalka-grade-2 { color: #f59e0b; text-shadow: 0 0 20px rgba(245, 158, 11, 0.4); }
.generalka-grade-3 { color: #06b6d4; text-shadow: 0 0 20px rgba(6, 182, 212, 0.4); }
.generalka-grade-4 { color: #10b981; text-shadow: 0 0 20px rgba(16, 185, 129, 0.4); }
.generalka-grade-5 { color: #8b5cf6; text-shadow: 0 0 25px rgba(139, 92, 246, 0.5); }

.generalka-encouragement {
    background: var(--emerald-light);
    border: 1px solid var(--emerald-glow);
    color: var(--accent-emerald);
    border-radius: 18px;
    padding: 18px 24px;
    margin-top: 18px;
    font-weight: 700;
    font-size: 1rem;
    line-height: 1.6;
}

/* ==================== ASTRA CHAPTER INTRO (UVOD V POGLAVJE) ==================== */
.chapter-intro-bento {
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-bento);
    padding: 24px 28px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.chapter-intro-bento::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #06b6d4, #6366f1, #8b5cf6, #f59e0b);
}

.intro-bento-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    cursor: pointer;
    user-select: none;
}

.intro-title-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.intro-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid var(--primary-glow);
    width: fit-content;
}

.intro-title-group h3 {
    margin: 0;
    font-size: 1.22rem;
    font-weight: 800;
    color: var(--text-main);
}

.intro-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 15px;
    border-radius: var(--radius-pill);
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-weight: 700;
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.intro-toggle-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-glow);
    color: var(--primary);
    transform: translateY(-1px);
}

.intro-toggle-icon {
    display: inline-block;
    transition: transform 0.25s ease;
    font-size: 0.75rem;
}

.chapter-intro-bento.collapsed .intro-toggle-icon {
    transform: rotate(180deg);
}

.intro-bento-content {
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    max-height: 1200px;
    opacity: 1;
    overflow: hidden;
}

.chapter-intro-bento.collapsed .intro-bento-content {
    max-height: 0;
    opacity: 0;
    margin: 0;
    padding: 0;
}

.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.intro-card {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 18px 20px;
    border-radius: 18px;
    border: 1px solid var(--border-color);
    transition: all 0.25s ease;
}

.intro-card:hover {
    transform: translateY(-2px);
}

.intro-card-icon {
    font-size: 1.6rem;
    line-height: 1;
    padding: 8px;
    border-radius: 12px;
    background: var(--bg-card);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.intro-card-text {
    flex: 1;
}

.intro-card-text h4 {
    font-size: 0.95rem;
    font-weight: 800;
    margin-bottom: 6px;
}

.intro-card-text p {
    font-size: 0.88rem;
    line-height: 1.55;
    margin: 0;
    color: var(--text-secondary);
}

/* 4 tematske barvne sheme kartic */
.intro-card.hook-card {
    background: rgba(6, 182, 212, 0.06);
    border-color: rgba(6, 182, 212, 0.25);
}
.intro-card.hook-card h4 { color: #0891b2; }

.intro-card.rule-card {
    background: rgba(99, 102, 241, 0.07);
    border-color: rgba(99, 102, 241, 0.25);
}
.intro-card.rule-card h4 { color: var(--primary); }

.intro-card.trap-card {
    background: rgba(245, 158, 11, 0.07);
    border-color: rgba(245, 158, 11, 0.3);
}
.intro-card.trap-card h4 { color: #d97706; }

.intro-card.example-card {
    background: rgba(16, 185, 129, 0.07);
    border-color: rgba(16, 185, 129, 0.25);
}
.intro-card.example-card h4 { color: #059669; }

html[data-theme="dark"] .intro-card.hook-card h4 { color: #38bdf8; }
html[data-theme="dark"] .intro-card.rule-card h4 { color: #818cf8; }
html[data-theme="dark"] .intro-card.trap-card h4 { color: #fbbf24; }
html[data-theme="dark"] .intro-card.example-card h4 { color: #34d399; }

.mini-example-flow {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    font-size: 0.86rem;
    margin-top: 4px;
}

.step-badge {
    font-weight: 800;
    font-size: 0.74rem;
    padding: 2px 7px;
    border-radius: 6px;
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-emerald);
}

.intro-action-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-soft);
}

.intro-ready-text {
    font-size: 0.86rem;
    font-weight: 700;
    color: var(--text-muted);
}

/* ==================== ASTRA DYNAMIC INTERACTIVE GRAPHICS ==================== */
.visual-lab-card {
    background: var(--bg-card);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-bento);
    padding: 28px 32px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: relative;
    overflow: hidden;
}

.visual-lab-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #ec4899, #8b5cf6, #3b82f6, #10b981);
}

.visual-lab-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.visual-lab-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    background: linear-gradient(135deg, rgba(236, 72, 153, 0.15), rgba(139, 92, 246, 0.15));
    color: #a855f7;
    border: 1px solid rgba(168, 85, 247, 0.3);
}

html[data-theme="dark"] .visual-lab-badge {
    color: #c084fc;
    border-color: rgba(192, 132, 252, 0.4);
}

.visual-graphics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
}

@media (max-width: 960px) {
    .visual-graphics-grid {
        grid-template-columns: 1fr;
    }
}

/* 1. Ulomki Laboratorij */
.fraction-box {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.fraction-control-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.fraction-stepper {
    display: inline-flex;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-pill);
    padding: 4px 6px;
    gap: 10px;
}

.stepper-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-subtle);
    color: var(--text-main);
    font-weight: 900;
    font-size: 1.1rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.stepper-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-glow);
    color: var(--primary);
    transform: scale(1.08);
}

.fraction-number-big {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 800;
    min-width: 36px;
    text-align: center;
}

.fraction-display-card {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 14px;
    border-radius: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.frac-stacked {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    font-family: var(--font-mono);
    font-weight: 900;
    font-size: 1.8rem;
    line-height: 1;
}

.frac-stacked .frac-num { color: var(--primary); }
.frac-stacked .frac-bar {
    width: 100%;
    height: 3px;
    background: var(--text-main);
    margin: 3px 0;
    border-radius: 2px;
}
.frac-stacked .frac-den { color: var(--accent-emerald); }

.frac-decimal-badge {
    display: inline-flex;
    flex-direction: column;
    gap: 2px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.frac-decimal-badge strong {
    font-size: 1.15rem;
    color: var(--text-main);
}

.fraction-visual-dual {
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: 20px;
    flex-wrap: wrap;
    padding: 16px;
    background: var(--bg-card);
    border-radius: 18px;
    border: 1px solid var(--border-color);
}

.fraction-svg-container {
    width: 180px;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.fraction-pie-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.fraction-sector {
    transition: fill 0.3s ease, transform 0.2s ease;
    cursor: pointer;
}

.fraction-sector:hover {
    filter: brightness(1.15);
}

.fraction-bar-wrap {
    flex: 1;
    min-width: 180px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.fraction-strip-bar {
    height: 36px;
    background: rgba(148, 163, 184, 0.15);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    overflow: hidden;
    display: flex;
}

.fraction-strip-slice {
    height: 100%;
    border-right: 1.5px solid var(--bg-card);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.fraction-strip-slice:last-child {
    border-right: none;
}

.fraction-strip-slice.filled {
    background: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.3);
}

/* Enakovrednost ulomkov (Razširjanje / Krajšanje) */
.fraction-equivalence-box {
    margin-top: 10px;
    padding: 14px 18px;
    border-radius: 14px;
    background: rgba(99, 102, 241, 0.06);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.equiv-title {
    font-size: 0.82rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.equiv-chips-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.equiv-chip {
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    font-family: var(--font-mono);
    font-weight: 800;
    font-size: 0.88rem;
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.equiv-chip.active {
    background: var(--primary-gradient);
    color: #ffffff;
    border-color: transparent;
    box-shadow: var(--shadow-neon-btn);
}

.preset-pills-row {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.preset-pill-btn {
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-weight: 700;
    font-size: 0.78rem;
    cursor: pointer;
    transition: all 0.2s;
}

.preset-pill-btn:hover {
    border-color: var(--primary-glow);
    color: var(--primary);
    transform: translateY(-1px);
}

/* 2. Rimska števila Interaktivni Razstavljalnik */
.roman-box {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.roman-slider-wrap {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.roman-slider {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: rgba(148, 163, 184, 0.25);
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
}

.roman-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary-gradient);
    border: 2px solid #ffffff;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.6);
    cursor: grab;
    transition: transform 0.15s;
}

.roman-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.roman-result-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 20px;
    border-radius: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.roman-hero-letters {
    font-family: var(--font-sans);
    font-size: 2.2rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.roman-hero-arabic {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-main);
}

.roman-tiers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

@media (max-width: 640px) {
    .roman-tiers-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.roman-tier-col {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 12px 10px;
    text-align: center;
    transition: all 0.2s ease;
}

.roman-tier-col:hover {
    transform: translateY(-2px);
    border-color: var(--primary-glow);
}

.roman-tier-name {
    font-size: 0.72rem;
    font-weight: 800;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.roman-tier-arabic {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text-secondary);
}

.roman-tier-roman {
    font-family: var(--font-sans);
    font-size: 1.35rem;
    font-weight: 900;
    color: var(--primary);
    margin-top: 4px;
}

.roman-logic-explainer {
    padding: 14px 18px;
    border-radius: 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    font-size: 0.88rem;
    line-height: 1.55;
    color: var(--text-secondary);
}

.roman-logic-explainer strong {
    color: var(--text-main);
}

/* 3. Številska premica in absolutna vrednost */
.numberline-box {
    grid-column: 1 / -1;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.numberline-svg-wrap {
    width: 100%;
    overflow-x: auto;
    padding: 10px 0;
}

.numberline-interactive-svg {
    width: 100%;
    min-width: 600px;
    height: 120px;
}

.nl-axis {
    stroke: var(--text-muted);
    stroke-width: 2.5;
}

.nl-tick {
    stroke: var(--text-muted);
    stroke-width: 1.5;
}

.nl-label {
    fill: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    text-anchor: middle;
}

.nl-zero-label {
    fill: var(--primary);
    font-weight: 900;
    font-size: 14px;
}

.nl-point-circle {
    cursor: grab;
    transition: transform 0.15s ease;
}

.nl-point-circle:hover {
    transform: scale(1.25);
}

.nl-distance-arc {
    stroke: #8b5cf6;
    stroke-width: 3;
    stroke-dasharray: 4 4;
    fill: none;
    animation: arcDash 1s linear infinite;
}

@keyframes arcDash {
    to { stroke-dashoffset: -8; }
}

.nl-distance-pill {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
    background: var(--bg-card);
    padding: 14px 20px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}