/* ===========================
   CSS Design System & Variables
   =========================== */
:root {
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;

    --violet-400: #a78bfa;
    --violet-500: #8b5cf6;
    --violet-600: #7c3aed;

    --gray-25: #fcfcfd;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    --green-50: #ecfdf5;
    --green-500: #10b981;
    --green-600: #059669;

    --red-50: #fef2f2;
    --red-500: #ef4444;

    --amber-50: #fffbeb;
    --amber-500: #f59e0b;

    --blue-50: #eff6ff;
    --blue-500: #3b82f6;

    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);

    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===========================
   Reset & Base
   =========================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    color: var(--gray-800);
    background: var(--gray-25);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===========================
   Typography
   =========================== */
h1 { font-size: 3.5rem; font-weight: 800; letter-spacing: -0.04em; line-height: 1.1; }
h2 { font-size: 2.25rem; font-weight: 700; letter-spacing: -0.03em; line-height: 1.2; }
h3 { font-size: 1.25rem; font-weight: 600; letter-spacing: -0.02em; }

.gradient-text {
    background: linear-gradient(135deg, var(--primary-500), var(--violet-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header p {
    max-width: 600px;
    margin: 12px auto 0;
    color: var(--gray-500);
    font-size: 1.05rem;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-500);
    background: var(--primary-50);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

/* ===========================
   Navbar
   =========================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.03em;
}

.logo-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--violet-500));
    border-radius: var(--radius-sm);
    color: white;
}

.logo-icon svg {
    width: 20px;
    height: 20px;
}

.logo-accent {
    color: var(--primary-500);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-600);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary-600);
    background: var(--primary-50);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    justify-content: center;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
    border-radius: var(--radius-lg);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--violet-500));
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
}

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

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
    border: 1.5px solid var(--gray-200);
}

.btn-ghost:hover {
    background: var(--gray-50);
    border-color: var(--gray-300);
    color: var(--gray-800);
}

.btn-white {
    background: white;
    color: var(--primary-600);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-calculate {
    display: flex;
    width: 100%;
    max-width: 400px;
    margin: 24px auto 0;
    padding: 18px 32px;
    background: linear-gradient(135deg, var(--primary-500), var(--violet-500));
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.35);
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.btn-calculate:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.45);
}

.btn-calculate:active {
    transform: translateY(0);
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    position: relative;
    padding: 160px 0 100px;
    overflow: hidden;
    background: linear-gradient(180deg, var(--primary-50) 0%, var(--white) 100%);
}

.hero.hero-compact {
    padding: 120px 0 40px;
}

.hero.hero-compact .hero-subtitle {
    max-width: 700px;
    font-size: 1rem;
    margin-top: 16px;
}

/* Language Selector */
.lang-selector {
    margin-left: 8px;
}

.lang-selector select {
    padding: 6px 10px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-600);
    background: white;
    cursor: pointer;
    outline: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    padding-right: 24px;
    transition: var(--transition);
}

.lang-selector select:hover {
    border-color: var(--primary-300);
}

.lang-selector select:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.hero-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.4;
    filter: blur(60px);
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: var(--primary-200);
    top: -150px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.shape-2 {
    width: 350px;
    height: 350px;
    background: var(--violet-400);
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
    opacity: 0.25;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: var(--blue-500);
    top: 50%;
    left: 50%;
    animation: float 12s ease-in-out infinite;
    opacity: 0.15;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -20px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
    position: relative;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: white;
    border: 1px solid var(--primary-100);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-600);
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    animation: fadeUp 0.6s ease-out;
}

.hero h1 {
    animation: fadeUp 0.6s ease-out 0.1s both;
}

.hero-subtitle {
    max-width: 600px;
    margin: 20px auto 0;
    font-size: 1.15rem;
    color: var(--gray-500);
    line-height: 1.7;
    animation: fadeUp 0.6s ease-out 0.2s both;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 36px;
    animation: fadeUp 0.6s ease-out 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    margin-top: 56px;
    animation: fadeUp 0.6s ease-out 0.4s both;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--gray-400);
    font-weight: 500;
    margin-top: 2px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-200);
}

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

/* ===========================
   Calculator Section
   =========================== */
.calculator-section {
    padding: 80px 0 100px;
}

/* Advanced Options */
.advanced-options-card {
    background: white;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-xl);
    margin-bottom: 24px;
    overflow: hidden;
    transition: var(--transition);
}

.advanced-options-card:hover {
    border-color: var(--gray-300);
}

.advanced-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.advanced-toggle-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.advanced-icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-50);
    border-radius: var(--radius);
    color: var(--primary-500);
    flex-shrink: 0;
}

.advanced-title {
    font-weight: 600;
    color: var(--gray-800);
    display: block;
    text-align: left;
}

.advanced-subtitle {
    font-size: 0.85rem;
    color: var(--gray-400);
    display: block;
    text-align: left;
    margin-top: 2px;
}

.chevron-icon {
    color: var(--gray-400);
    transition: var(--transition);
    flex-shrink: 0;
}

.advanced-toggle[aria-expanded="true"] .chevron-icon,
.semester-toggle .chevron-icon.rotated {
    transform: rotate(180deg);
}

.advanced-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.advanced-content.open {
    max-height: 200px;
    padding: 0 24px 24px;
}

.advanced-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-100);
}

.advanced-field label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: 8px;
}

.input-with-addon {
    display: flex;
    align-items: center;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.input-with-addon:focus-within {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.input-with-addon .addon {
    padding: 10px 12px;
    background: var(--gray-50);
    color: var(--gray-500);
    font-weight: 600;
    border-right: 1px solid var(--gray-200);
}

.input-with-addon input {
    border: none;
    outline: none;
    padding: 10px 12px;
    width: 80px;
    font-weight: 500;
}

/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
    cursor: pointer;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    inset: 0;
    background: var(--gray-300);
    border-radius: var(--radius-full);
    transition: var(--transition);
}

.slider::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.switch input:checked + .slider {
    background: linear-gradient(135deg, var(--primary-500), var(--violet-500));
}

.switch input:checked + .slider::before {
    transform: translateX(22px);
}

/* ===========================
   Semester Card
   =========================== */
.semester-card {
    background: white;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-xl);
    margin-bottom: 20px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.semester-card:hover {
    border-color: var(--primary-200);
    box-shadow: var(--shadow), var(--shadow-glow);
}

.semester-header {
    padding: 0;
}

.semester-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
}

.semester-toggle-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.semester-icon {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-50);
    border-radius: var(--radius);
    color: var(--primary-500);
}

.semester-title {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--gray-800);
}

.semester-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.semester-content.open {
    max-height: 2000px;
    padding: 0 24px 24px;
}

/* Courses Table */
.courses-table {
    border: 1.5px solid var(--gray-100);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table-header {
    display: grid;
    grid-template-columns: 2fr 0.8fr 1.2fr 1fr 50px;
    gap: 12px;
    padding: 14px 20px;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-100);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-500);
}

.course-row {
    display: grid;
    grid-template-columns: 2fr 0.8fr 1.2fr 1fr 50px;
    gap: 12px;
    padding: 12px 20px;
    align-items: center;
    border-bottom: 1px solid var(--gray-50);
    transition: var(--transition);
    animation: slideIn 0.25s ease-out;
}

.course-row:last-child {
    border-bottom: none;
}

.course-row:hover {
    background: var(--gray-25);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.course-row input[type="text"] {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--gray-800);
    background: white;
    transition: var(--transition);
    outline: none;
}

.course-row input[type="text"]:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.course-row input[type="text"]::placeholder {
    color: var(--gray-300);
}

.course-row select {
    width: 100%;
    padding: 10px 12px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 0.85rem;
    color: var(--gray-700);
    background: white;
    cursor: pointer;
    transition: var(--transition);
    outline: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px;
}

.course-row select:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.btn-remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: none;
    color: var(--gray-300);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.btn-remove:hover {
    background: var(--red-50);
    color: var(--red-500);
}

.btn-add-class {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    padding: 10px 20px;
    border: 1.5px dashed var(--gray-300);
    border-radius: var(--radius);
    background: none;
    color: var(--gray-500);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-add-class:hover {
    border-color: var(--primary-400);
    color: var(--primary-500);
    background: var(--primary-50);
}

/* Calculator Actions */
.calculator-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 8px;
}

.btn-calc {
    flex: 1;
    max-width: 260px;
}

/* ===========================
   Results Card
   =========================== */
.results-card {
    background: white;
    border: 1.5px solid var(--primary-100);
    border-radius: var(--radius-2xl);
    padding: 40px;
    margin-top: 40px;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    animation: resultsFadeIn 0.5s ease-out;
}

@keyframes resultsFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.results-header h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--gray-900);
}

.btn-share {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    border: 1.5px solid var(--gray-200);
    background: white;
    color: var(--gray-500);
    cursor: pointer;
    transition: var(--transition);
}

.btn-share:hover {
    border-color: var(--primary-400);
    color: var(--primary-500);
    background: var(--primary-50);
}

.results-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
    gap: 20px;
    align-items: center;
}

.result-item {
    text-align: center;
    padding: 20px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.result-main {
    background: transparent;
    grid-row: span 1;
}

.result-gpa-ring {
    position: relative;
    width: 140px;
    height: 140px;
    margin: 0 auto;
}

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

.gpa-ring-progress {
    transition: stroke-dashoffset 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.result-gpa-value {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.gpa-number {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--primary-500), var(--violet-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gpa-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 2px;
}

.result-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
}

.result-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-800);
}

.result-letter {
    font-size: 1.8rem;
    color: var(--primary-500);
}

/* Semester Breakdown */
.semester-breakdown {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-100);
}

.semester-breakdown h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 16px;
}

.breakdown-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    background: var(--gray-50);
    border-radius: var(--radius);
    border: 1px solid var(--gray-100);
}

.breakdown-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-500);
}

.breakdown-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-800);
}

/* ===========================
   How It Works
   =========================== */
.how-it-works-section {
    padding: 80px 0;
    background: var(--gray-50);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.step-card {
    background: white;
    border: 1.5px solid var(--gray-100);
    border-radius: var(--radius-xl);
    padding: 36px 28px;
    transition: var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(135deg, var(--primary-500), var(--violet-500));
    transform: scaleX(0);
    transition: var(--transition-slow);
}

.step-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-100);
}

.step-card:hover::before {
    transform: scaleX(1);
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--gray-100);
    letter-spacing: -0.05em;
    line-height: 1;
    margin-bottom: 16px;
}

.step-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-50);
    border-radius: var(--radius);
    color: var(--primary-500);
    margin-bottom: 20px;
}

.step-card h3 {
    margin-bottom: 10px;
    color: var(--gray-800);
}

.step-card p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.7;
}

/* Formula Card */
.formula-card {
    background: white;
    border: 1.5px solid var(--primary-100);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow), var(--shadow-glow);
}

.formula-card h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-600);
    margin-bottom: 20px;
}

.formula-display {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    margin-bottom: 16px;
}

.formula-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.formula-fraction {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    vertical-align: middle;
}

.fraction-top {
    padding-bottom: 4px;
    border-bottom: 2px solid var(--primary-400);
    color: var(--primary-600);
    font-size: 0.9rem;
}

.fraction-bottom {
    padding-top: 4px;
    color: var(--primary-600);
    font-size: 0.9rem;
}

.formula-example {
    font-size: 0.9rem;
    color: var(--gray-500);
    background: var(--green-50);
    padding: 12px 16px;
    border-radius: var(--radius);
    border-left: 3px solid var(--green-500);
}

/* ===========================
   Grading Scale
   =========================== */
.grading-section {
    padding: 80px 0;
}

.grading-table-wrapper {
    background: white;
    border: 1.5px solid var(--gray-100);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.grading-table {
    width: 100%;
    border-collapse: collapse;
}

.grading-table thead {
    background: var(--gray-50);
}

.grading-table th {
    padding: 16px 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--gray-500);
    text-align: left;
    border-bottom: 1.5px solid var(--gray-100);
}

.grading-table td {
    padding: 14px 20px;
    font-size: 0.9rem;
    color: var(--gray-600);
    border-bottom: 1px solid var(--gray-50);
    font-weight: 500;
}

.grading-table tr:last-child td {
    border-bottom: none;
}

.grading-table tr:hover td {
    background: var(--gray-25);
}

.grade-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 14px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 700;
    min-width: 40px;
}

.grade-a { background: var(--green-50); color: var(--green-600); }
.grade-b { background: var(--blue-50); color: var(--blue-500); }
.grade-c { background: var(--amber-50); color: var(--amber-500); }
.grade-d { background: #fff7ed; color: #ea580c; }
.grade-f { background: var(--red-50); color: var(--red-500); }

/* ===========================
   FAQ Section
   =========================== */
.faq-section {
    padding: 80px 0;
    background: var(--gray-50);
}

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: white;
    border: 1.5px solid var(--gray-100);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--gray-200);
}

.faq-item.active {
    border-color: var(--primary-200);
    box-shadow: var(--shadow), 0 0 20px rgba(99, 102, 241, 0.08);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    gap: 12px;
}

.faq-question span {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--gray-800);
}

.faq-chevron {
    color: var(--gray-400);
    transition: var(--transition);
    flex-shrink: 0;
}

.faq-item.active .faq-chevron {
    transform: rotate(180deg);
    color: var(--primary-500);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding: 0 24px 20px;
}

.faq-answer p {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.8;
}

/* ===========================
   Content Sections
   =========================== */
.content-section {
    padding: 80px 0;
}

.content-section.content-alt {
    background: var(--gray-50);
}

.content-card {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border: 1.5px solid var(--gray-100);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow);
}

.content-card p {
    font-size: 1rem;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 16px;
}

.content-card p:last-child {
    margin-bottom: 0;
}

/* Steps Section - 5 cards layout */
.steps-section {
    padding: 80px 0;
    background: var(--gray-50);
}

.steps-section .steps-grid {
    grid-template-columns: repeat(3, 1fr);
}

.steps-section .step-card:nth-child(4),
.steps-section .step-card:nth-child(5) {
    /* These two share the bottom row */
}

/* Percentage Grid */
.percentage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 10px;
    margin: 20px 0;
}

.pct-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--gray-50);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius);
    font-size: 0.9rem;
    gap: 8px;
}

.pct-range {
    font-weight: 500;
    color: var(--gray-600);
    font-size: 0.85rem;
    white-space: nowrap;
}

.pct-gpa {
    font-weight: 700;
    color: var(--gray-800);
    font-size: 0.9rem;
}

/* Comparison Grid */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.comparison-card {
    background: white;
    border: 1.5px solid var(--gray-100);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: var(--transition-slow);
}

.comparison-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-100);
}

.comparison-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--gray-100);
}

.comparison-header h3 {
    margin: 0;
}

.unweighted-header {
    border-bottom-color: var(--gray-300);
    color: var(--gray-700);
}

.unweighted-header svg {
    color: var(--gray-400);
}

.weighted-header {
    border-bottom-color: var(--primary-300);
    color: var(--primary-700);
}

.weighted-header svg {
    color: var(--primary-500);
}

.comparison-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.comparison-list li {
    position: relative;
    padding-left: 20px;
    font-size: 0.9rem;
    color: var(--gray-600);
    line-height: 1.7;
}

.comparison-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary-400);
}

/* Sample Table */
.sample-table-wrapper {
    overflow-x: auto;
    margin: 20px 0;
}

.sample-table th,
.sample-table td {
    text-align: center;
    font-size: 0.85rem;
}

.sample-table th:first-child,
.sample-table td:first-child {
    text-align: left;
}

.sample-total-row td {
    background: var(--primary-50) !important;
    border-top: 2px solid var(--primary-200);
}

/* ===========================
   Interactive GPA Diagram
   =========================== */
.interactive-diagram {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border: 1.5px solid var(--gray-100);
    border-radius: var(--radius-2xl);
    padding: 32px;
    box-shadow: var(--shadow-lg);
}

.diagram-courses {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.diagram-course {
    background: var(--gray-50);
    border: 1.5px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: var(--transition);
}

.diagram-course:hover {
    border-color: var(--primary-200);
    box-shadow: var(--shadow);
}

.dc-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.dc-num {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500), var(--violet-500));
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.dc-name {
    border: none;
    background: transparent;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--gray-800);
    width: 100%;
    outline: none;
    padding: 2px 0;
}

.dc-name:focus {
    border-bottom: 1.5px solid var(--primary-300);
}

.dc-fields {
    display: grid;
    gap: 8px;
    margin-bottom: 14px;
}

.dc-field {
    display: grid;
    grid-template-columns: 55px 1fr;
    align-items: center;
    gap: 8px;
}

.dc-field label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--gray-400);
}

.dc-field select {
    padding: 6px 8px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--gray-700);
    background: white;
    cursor: pointer;
    outline: none;
    width: 100%;
}

.dc-field select:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

.dc-visual {
    margin-top: 6px;
}

.dc-bar-wrap {
    height: 28px;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
}

.dc-bar {
    height: 100%;
    border-radius: var(--radius-sm);
    background: linear-gradient(90deg, var(--primary-400), var(--primary-500));
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 8px;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s ease;
    min-width: 40px;
}

.dc-bar-honors {
    background: linear-gradient(90deg, #10b981, #059669);
}

.dc-bar-ap {
    background: linear-gradient(90deg, var(--violet-400), var(--violet-600));
}

.dc-bar-label {
    font-size: 0.7rem;
    font-weight: 700;
    color: white;
    white-space: nowrap;
}

.dc-calc-text {
    font-size: 0.78rem;
    color: var(--gray-500);
    margin-top: 6px;
    text-align: center;
}

.dc-calc-text strong {
    color: var(--gray-800);
}

/* Diagram Result */
.diagram-result {
    background: linear-gradient(135deg, var(--primary-50), rgba(139, 92, 246, 0.06));
    border: 1.5px solid var(--primary-100);
    border-radius: var(--radius-xl);
    padding: 24px;
}

.diagram-formula {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.df-step {
    text-align: center;
    min-width: 80px;
}

.df-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--gray-400);
    margin-bottom: 4px;
}

.df-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--gray-800);
    transition: all 0.4s ease;
}

.df-gpa {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--primary-500), var(--violet-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.df-divider {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--gray-300);
}

.df-step-result {
    background: white;
    padding: 12px 20px;
    border-radius: var(--radius-lg);
    border: 1.5px solid var(--primary-200);
    box-shadow: var(--shadow);
}

.diagram-unweighted {
    text-align: center;
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--gray-500);
}

.diagram-unweighted strong {
    color: var(--gray-800);
    font-size: 1.1rem;
}

.diagram-diff {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 10px;
    background: var(--green-50);
    color: var(--green-600);
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
}

/* Live Breakdown Bars in Results */
.live-breakdown {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-100);
}

.live-breakdown h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 16px;
}

.breakdown-bars {
    display: grid;
    gap: 10px;
}

.bb-item {
    display: grid;
    grid-template-columns: 140px 1fr 60px;
    gap: 12px;
    align-items: center;
}

.bb-name {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-600);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bb-bar-wrap {
    height: 24px;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.bb-bar {
    height: 100%;
    border-radius: var(--radius-sm);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 4px;
}

.bb-bar.bb-regular {
    background: linear-gradient(90deg, var(--primary-400), var(--primary-500));
}

.bb-bar.bb-honors {
    background: linear-gradient(90deg, #10b981, #059669);
}

.bb-bar.bb-ap {
    background: linear-gradient(90deg, var(--violet-400), var(--violet-600));
}

.bb-pts {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--gray-700);
    text-align: right;
}

/* ===========================
   CTA Section
   =========================== */
.cta-section {
    padding: 80px 0;
}

.cta-card {
    position: relative;
    background: linear-gradient(135deg, var(--primary-600), var(--violet-600));
    border-radius: var(--radius-2xl);
    padding: 64px 40px;
    text-align: center;
    overflow: hidden;
}

.cta-bg-shapes {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.cta-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    background: white;
}

.cta-shape-1 {
    width: 300px;
    height: 300px;
    top: -100px;
    right: -50px;
}

.cta-shape-2 {
    width: 200px;
    height: 200px;
    bottom: -80px;
    left: -40px;
}

.cta-card h2 {
    position: relative;
    color: white;
    margin-bottom: 16px;
}

.cta-card p {
    position: relative;
    color: rgba(255, 255, 255, 0.8);
    max-width: 500px;
    margin: 0 auto 32px;
    font-size: 1.05rem;
}

.cta-card .btn {
    position: relative;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
}

.footer-brand .logo {
    color: white;
    margin-bottom: 16px;
}

.footer-brand .logo-accent {
    color: var(--primary-400);
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--gray-500);
}

.footer-links-group h4 {
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.footer-links-group ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links-group a {
    font-size: 0.9rem;
    color: var(--gray-500);
    transition: var(--transition);
}

.footer-links-group a:hover {
    color: var(--primary-400);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--gray-600);
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 968px) {
    h1 { font-size: 2.75rem; }
    h2 { font-size: 1.85rem; }

    .hero { padding: 140px 0 80px; }
    .hero.hero-compact { padding: 110px 0 30px; }

    .diagram-courses {
        grid-template-columns: 1fr;
    }

    .interactive-diagram {
        padding: 20px;
    }

    .bb-item {
        grid-template-columns: 100px 1fr 50px;
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .steps-section .steps-grid {
        grid-template-columns: 1fr;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
    }

    .results-grid {
        grid-template-columns: 1fr 1fr;
    }

    .result-main {
        grid-column: span 2;
    }

    .content-section,
    .steps-section {
        padding: 60px 0;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }

    .footer-brand {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .nav-links { display: none; }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        padding: 16px 24px;
        border-bottom: 1px solid var(--gray-100);
        box-shadow: var(--shadow-lg);
    }

    h1 { font-size: 2.25rem; }

    .hero { padding: 120px 0 60px; }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats { gap: 20px; }
    .stat-number { font-size: 1.25rem; }

    .table-header {
        display: none;
    }

    .course-row {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
        padding: 16px;
        border-bottom: 1.5px solid var(--gray-100);
    }

    .course-row .course-name {
        grid-column: span 2;
    }

    .course-row .btn-remove {
        grid-column: span 2;
        justify-self: end;
    }

    .advanced-grid {
        grid-template-columns: 1fr 1fr;
    }

    .results-grid {
        grid-template-columns: 1fr 1fr;
    }

    .results-card {
        padding: 28px 20px;
    }

    .calculator-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-calc {
        max-width: 100%;
        width: 100%;
    }

    .grading-table-wrapper {
        overflow-x: auto;
    }

    .cta-card {
        padding: 48px 24px;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-brand {
        grid-column: span 1;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 1.85rem; }
    h2 { font-size: 1.5rem; }

    .container { padding: 0 16px; }

    .hero { padding: 110px 0 50px; }
    .hero.hero-compact { padding: 100px 0 24px; }
    .hero-subtitle { font-size: 1rem; }

    .lang-selector { display: none; }

    .diagram-formula {
        gap: 10px;
    }

    .df-value {
        font-size: 1.2rem;
    }

    .df-gpa {
        font-size: 1.5rem;
    }

    .bb-item {
        grid-template-columns: 80px 1fr 45px;
        gap: 8px;
    }

    .bb-name {
        font-size: 0.75rem;
    }

    .content-card {
        padding: 24px 20px;
    }

    .comparison-card {
        padding: 24px 20px;
    }

    .percentage-grid {
        grid-template-columns: 1fr 1fr;
    }

    .content-section,
    .steps-section {
        padding: 48px 0;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    .result-main {
        grid-column: span 1;
    }

    .course-row {
        grid-template-columns: 1fr;
    }

    .course-row .course-name {
        grid-column: span 1;
    }

    .course-row .btn-remove {
        grid-column: span 1;
    }
}

/* ===========================
   Utility animations
   =========================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Toast notification */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--gray-800);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: var(--shadow-xl);
    z-index: 9999;
    transition: var(--transition-slow);
}

.toast.visible {
    transform: translateX(-50%) translateY(0);
}

/* ===========================
   Tool Page Styles
   =========================== */
.hero-compact {
    padding: 120px 0 60px;
    min-height: auto;
}

.hero-compact .hero-content {
    padding: 0;
}

.hero-compact h1 {
    font-size: 2.6rem;
}

.hero-compact .hero-subtitle {
    font-size: 1.05rem;
    max-width: 680px;
}

.btn-calculate {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    max-width: 400px;
    margin: 24px auto 0;
    padding: 16px 32px;
    background: linear-gradient(135deg, var(--primary-500), var(--violet-500));
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-slow);
    box-shadow: var(--shadow-lg), 0 4px 20px rgba(99,102,241,0.3);
}

.btn-calculate:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), 0 8px 30px rgba(99,102,241,0.4);
}

.btn-calculate:active {
    transform: translateY(0);
}

.live-breakdown {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-100);
}

.live-breakdown h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 16px;
}

.semester-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
    padding: 0 24px;
}

.semester-content.open {
    max-height: 2000px;
    padding: 0 24px 24px;
}

@media (max-width: 768px) {
    .hero-compact h1 {
        font-size: 1.8rem;
    }

    .hero-compact {
        padding: 100px 0 40px;
    }
}