:root {
    /* 1. Nền (Background) */
    --bg-main: #0A0A0F;
    --bg-secondary: #0A0A0F;
    --bg-section: #111111;
    --bg-card: rgba(255, 255, 255, 0.03);
    
    /* 2. Chữ (Typography) */
    --text-heading: #FFFFFF;
    --text-body: #E0E0E0;
    --text-muted: #888888;
    --text-caption: #555555;
    --text-inverse: #0A0A0F;
    
    /* 3. Nhấn thương hiệu (Accent Color - Cosmic Purple & Gold) */
    --color-primary: #6B3CFF;
    --color-primary-hover: #5A30E6;
    --color-primary-active: #4A27C5;
    --color-primary-light: #A68CFF;
    --color-gold: #D4AF37;
    --color-gold-glow: rgba(212, 175, 55, 0.3);
    
    /* 4. Trạng thái (System Status) */
    --color-success: #28A745;
    --color-warning: #FFC107;
    --color-error: #DC3545;
    --color-info: #17A2B8;
    
    /* 5. Khung Viền (Borders) */
    --border-divider: rgba(255, 255, 255, 0.1);
    --border-card: rgba(255, 255, 255, 0.08);
    --border-input: rgba(255, 255, 255, 0.2);
    --border-focus: #D4AF37;

    /* 9. Font Hệ Thống */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* 10. Khoảng Cách (Spacing System) */
    --space-8: 8px;
    --space-16: 16px;
    --space-24: 24px;
    --space-32: 32px;
    --space-48: 48px;
    --space-64: 64px;

    /* == MAPPING CŨ LÊN SYSTEM == */
    --bg-dark: var(--bg-main);
    --bg-card-hover: #F0F0F0;
    --charcoal: var(--text-heading);
    --gray-light: var(--bg-section);
    --gray-dark: var(--border-input);
    
    --grad-primary: var(--color-primary);
    --grad-accent: var(--color-primary-hover);
    
    --text-main: var(--text-heading);
    --border-color: var(--border-divider);
    
    --radius-lg: 12px;
    --radius-md: 8px;
    --radius-sm: 4px;
    
    --spacing-xs: var(--space-8);
    --spacing-sm: var(--space-16);
    --spacing-md: var(--space-24);
    --spacing-lg: var(--space-32);
    --spacing-xl: var(--space-48);
    --transition: 0.3s ease;
    
    --bronze-main: var(--border-input);
    --bronze-dark: var(--text-heading);
    --bronze-light: var(--border-divider);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-main);
    color: var(--text-body);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-heading);
    font-weight: 600;
}

/* 6. HEADER UI KIT */
.top-nav {
    height: 80px;
    background: rgba(10, 10, 15, 0.85); /* Glass Header */
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-divider);
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
}

.nav-container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-24);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--color-gold); /* Chuyển chữ thành màu vàng gold cho đồng bộ logo mới */
    text-decoration: none;
    letter-spacing: 0.5px;
    transition: var(--transition);
}

.nav-logo:hover {
    text-shadow: 0 0 15px var(--color-gold-glow);
}

.logo-img {
    height: 40px; /* Chiều cao hợp lý với navbar 80px */
    width: auto;
    filter: brightness(0) saturate(100%) invert(75%) sepia(34%) saturate(718%) hue-rotate(354deg) brightness(96%) contrast(96%) drop-shadow(0 0 8px rgba(212, 175, 55, 0.6)); /* Hiệu ứng sáng viền vàng sang trọng và đổi màu */
    transition: var(--transition);
}

.nav-logo:hover .logo-img {
    filter: brightness(0) saturate(100%) invert(75%) sepia(34%) saturate(718%) hue-rotate(354deg) brightness(96%) contrast(96%) drop-shadow(0 0 15px rgba(212, 175, 55, 1));
    transform: scale(1.05);
}

.nav-menu {
    list-style: none;
    display: flex;
    gap: var(--space-32);
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: var(--text-body);
    font-family: var(--font-heading);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-primary);
}

.btn-cta-header {
    background: var(--color-primary);
    color: var(--text-inverse);
    padding: 12px 24px;
    border-radius: var(--space-8);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-family: var(--font-heading);
}

.btn-cta-header:hover {
    background: var(--color-primary-hover);
}

.btn-cta-header:active {
    background: var(--color-primary-active);
}

/* 7. HERO SECTION UI KIT */
.slider-banner {
    width: 100%;
    height: 80vh;
    min-height: 600px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0;
    margin-bottom: var(--space-48);
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    animation: fadeSlide 15s infinite;
}

.slide.slide-1 { 
    background-image: url('https://images.unsplash.com/photo-1534796636912-3b95b3ab5986?q=80&w=2000&auto=format&fit=crop'); 
    animation-delay: 0s; 
}
.slide.slide-2 { 
    background-image: url('https://images.unsplash.com/photo-1506318137071-a8e063b4bec0?q=80&w=2000&auto=format&fit=crop'); 
    animation-delay: 5s; 
}
.slide.slide-3 { 
    background-image: url('https://images.unsplash.com/photo-1462331940025-496dfbfc7564?q=80&w=2000&auto=format&fit=crop'); 
    animation-delay: 10s; 
}

@keyframes fadeSlide {
    0%, 20% { opacity: 1; transform: scale(1); }
    33.33%, 100% { opacity: 0; transform: scale(1.05); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(10,10,15,0.7) 0%, rgba(10,10,15,0.95) 100%);
    z-index: 1;
}

.hero-container.full-center {
    justify-content: center;
    text-align: center;
    z-index: 2;
    position: relative;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 800px;
}

.hero-center-logo {
    width: 140px;
    height: auto;
    margin-bottom: var(--space-24);
    filter: brightness(0) saturate(100%) invert(75%) sepia(34%) saturate(718%) hue-rotate(354deg) brightness(96%) contrast(96%) drop-shadow(0 0 15px rgba(212,175,55,0.8));
}

.banner-title {
    font-family: var(--font-heading);
    font-size: 56px;
    font-weight: 700;
    margin-bottom: var(--space-16);
    color: var(--color-gold);
    line-height: 1.2;
    background: none;
    -webkit-text-fill-color: var(--color-gold);
    text-shadow: 0 0 15px rgba(212, 175, 55, 0.8), 0 0 30px rgba(212, 175, 55, 0.4);
}

.banner-subtitle {
    font-size: 22px;
    color: #e2e8f0;
    font-weight: 400;
    margin-bottom: var(--space-32);
    line-height: 1.5;
    font-family: var(--font-body);
}

.btn-hero {
    background: linear-gradient(135deg, rgba(212,175,55,0.7) 0%, rgba(212,175,55,0.3) 100%);
    color: #fff;
    padding: 16px 40px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    border: 1px solid var(--color-gold);
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-heading);
    letter-spacing: 1px;
    text-transform: uppercase;
    box-shadow: 0 5px 20px rgba(0,0,0,0.5);
}

.btn-hero:hover {
    background: linear-gradient(135deg, rgba(212,175,55,1) 0%, rgba(212,175,55,0.6) 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-gold-glow);
}

/* Animations cho Hero Banner Text */
.hero-anim {
    opacity: 0;
    transform: translateY(30px);
    animation: slideUpFadeHero 1s ease-out forwards;
}
.hero-anim.delay-1 { animation-delay: 0.2s; }
.hero-anim.delay-2 { animation-delay: 0.4s; }

@keyframes slideUpFadeHero {
    to { opacity: 1; transform: translateY(0); }
}

/* Background Gradients (Removed vintage glows for clean design) */
.app-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-sm);
    z-index: 1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
}

h1 { font-size: 64px; line-height: 1.2; }
h2 { font-size: 40px; line-height: 1.3; }
h3 { font-size: 28px; line-height: 1.4; }

.app-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.app-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-top: var(--spacing-sm);
}

.gradient-text {
    background: var(--color-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.accent-text-orange {
    background: var(--color-primary-light);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Cards & UI Kit Layouts */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: var(--space-24);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.form-card {
    max-width: 600px;
    margin: 0 auto var(--space-48);
    background: linear-gradient(135deg, rgba(30, 30, 40, 0.95), rgba(15, 15, 20, 0.95));
    border: 1px solid rgba(212, 175, 55, 0.5); /* Viền vàng */
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6), 0 0 15px rgba(212, 175, 55, 0.15); /* Bóng glow vàng nhẹ */
    border-radius: var(--radius-lg);
    padding: var(--space-32);
    position: relative;
    z-index: 10;
}

/* Form Styles */
.form-group {
    margin-bottom: var(--space-16);
}

.form-group.row {
    display: flex;
    gap: var(--space-16);
}

.form-col {
    flex: 1;
}

label {
    display: block;
    font-size: 14px;
    color: var(--color-gold); /* Chữ nhãn màu vàng */
    margin-bottom: var(--space-8);
    font-weight: 600;
    letter-spacing: 0.5px;
}

input, select {
    width: 100%;
    background: rgba(10, 10, 15, 0.6); /* Nền kính tối */
    border: 1px solid rgba(212, 175, 55, 0.3); /* Viền input xám viền vàng */
    border-radius: var(--radius-sm);
    color: #fff;
    padding: 14px 16px;
    font-family: var(--font-body);
    font-size: 16px;
    transition: var(--transition);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2); /* Gold Glow Effect */
}

/* Base Buttons */
.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, rgba(212,175,55,0.7) 0%, rgba(212,175,55,0.3) 100%);
    color: #fff;
    border: 1px solid var(--color-gold);
    padding: 16px 24px;
    border-radius: var(--radius-sm);
    font-size: 18px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
    font-family: var(--font-heading);
    cursor: pointer;
    margin-top: var(--space-16);
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(107, 60, 255, 0.4);
}

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

.hidden {
    display: none !important;
}

/* Tabs */
.tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-xs);
    overflow-x: auto;
}

.tabs::-webkit-scrollbar {
    display: none;
}
.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    font-family: var(--font-body);
    padding: 0.5rem 1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text-main);
}

.tab-btn.active {
    color: var(--color-gold);
    font-weight: 600;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -11px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-gold);
    border-radius: 2px;
    box-shadow: 0 0 10px var(--color-gold-glow);
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s ease-in-out;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Grids for Results */
.grid-core-numbers, .grid-advanced-numbers {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-16);
    max-width: 1200px;
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .grid-core-numbers, .grid-advanced-numbers {
        grid-template-columns: repeat(3, 1fr);
    }
}
@media (max-width: 768px) {
    .grid-core-numbers, .grid-advanced-numbers {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 480px) {
    .grid-core-numbers, .grid-advanced-numbers {
        grid-template-columns: 1fr;
    }
}

.number-card {
    background: rgba(212, 175, 55, 0.03);
    border: 1px solid var(--color-gold);
    border-radius: var(--space-8); /* sharper corners, 8px */
    padding: var(--space-24) var(--space-16);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(8px);
    justify-content: space-between;
}

.number-card:hover {
    background: rgba(212, 175, 55, 0.08);
    transform: translateY(-5px);
    border-color: var(--color-gold);
    box-shadow: 0 10px 40px var(--color-gold-glow);
}

/* Modal Title & Number Value Styling (Scientific & Mystic) */
.number-title {
    font-size: 14px;
    font-weight: 800; /* đậm hơn (extra bold) */
    color: #FFFFFF; /* màu trắng */
    font-family: var(--font-heading);
    margin-bottom: var(--space-8);
    text-transform: uppercase;
    letter-spacing: 1px;
    min-height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.number-value {
    font-size: 2.8rem;
    font-weight: 700;
    font-family: var(--font-heading);
    color: var(--color-gold);
    background: linear-gradient(135deg, #FFDF00 0%, #D4AF37 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
    filter: drop-shadow(0 0 10px var(--color-gold-glow));
    line-height: 1.1;
}

/* Micro-animations */
.cascade-anim {
    animation: slideUpFade 0.5s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}

@keyframes slideUpFade {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Premium PDF Button Animations */
@keyframes slowSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes bgShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes glowPulse {
    0% { box-shadow: 0 0 15px rgba(212,175,55,0.4); }
    100% { box-shadow: 0 0 30px rgba(212,175,55,0.8); }
}

.number-desc {
    font-size: 11px;
    color: #777777;
    line-height: 1.4;
    margin-top: var(--space-8);
    margin-bottom: var(--space-16);
    flex-grow: 1;
}

.card-action {
    width: 100%;
    margin-top: auto;
}

.btn-readmore {
    background: transparent;
    color: var(--color-primary-light);
    border: 1px solid rgba(107, 60, 255, 0.3);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    font-family: var(--font-body);
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    width: 100%;
}

.btn-readmore:hover {
    background: rgba(107, 60, 255, 0.1);
    color: var(--color-gold);
    border-color: var(--color-gold);
}

/* Utility classes */
.text-center { text-align: center; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }

/* Responsive */
@media (max-width: 768px) {
    .form-group.row {
        flex-direction: column;
        gap: 0;
    }
    .gradient-text {
        font-size: 2.2rem;
    }
}
/* Numerology Charts */
.charts-grid-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    justify-content: center;
    margin-top: var(--spacing-md);
}

.chart-wrapper {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    padding: var(--space-24);
    text-align: center;
    flex: 1;
    min-width: 300px;
    max-width: 400px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.chart-title {
    font-family: var(--font-heading);
    color: var(--color-gold);
    font-size: 1.5rem;
    margin-bottom: var(--space-16);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.pythagoras-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 0;
    margin-bottom: 1rem;
    border: 1px solid var(--border-divider);
    background: transparent;
}

.pythagoras-grid .grid-cell {
    border-right: 1px solid var(--border-divider);
    border-bottom: 1px solid var(--border-divider);
    aspect-ratio: 1 / 1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 2px;
    transition: var(--transition);
}

.pythagoras-grid .grid-cell:nth-child(3n) { border-right: none; }
.pythagoras-grid .grid-cell:nth-child(n+7) { border-bottom: none; }

.cell-num {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.1;
    display: inline-block;
    max-width: 100%;
    word-break: break-all;
    text-align: center;
}
.birth-color, .name-color { 
    color: var(--color-gold); 
    background: linear-gradient(135deg, #FFDF00 0%, #D4AF37 100%); 
    -webkit-background-clip: text; 
    background-clip: text; 
    -webkit-text-fill-color: transparent; 
    filter: drop-shadow(0 0 10px var(--color-gold-glow));
}
.empty-num { color: rgba(255, 255, 255, 0.1); }

.pythagoras-grid .grid-cell.active:hover {
    background: rgba(255, 255, 255, 0.05);
    cursor: pointer;
}

/* Footer Buttons Under Chart */
.chart-footer-btn-wrapper {
    margin: 1.2rem 0 0.5rem;
}
.chart-footer-btn {
    display: inline-block;
    padding: 0.6rem 2rem;
    border-radius: 8px;
    background: linear-gradient(135deg, #6B3CFF 0%, #4a21d1 100%);
    color: #ffffff;
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    box-shadow: 0 4px 15px rgba(107, 60, 255, 0.4);
    border: 1px solid rgba(255,255,255,0.1);
}
.copyright-text {
    font-size: 0.85rem;
    color: #94a3b8;
    margin-bottom: 1rem;
}

.centered-combined {
    width: 100%;
    justify-content: center;
    margin-top: 1rem;
}
.centered-combined .chart-wrapper {
    max-width: 450px;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(10, 10, 15, 0.5); /* Tối màu tinh tế hơn */
    backdrop-filter: blur(4px); /* Độ mờ vừa phải để thấy glow xuyên qua */
    z-index: 9999999 !important;
    pointer-events: auto;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--bg-main);
    border: 1px solid var(--color-gold);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 30px var(--color-gold-glow);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    color: var(--pastel-brown-light);
    font-size: 1.5rem;
}

.close-modal {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    transition: var(--transition);
}

.close-modal:hover {
    color: var(--text-main);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    color: var(--text-main);
    line-height: 1.8;
}

.modal-body h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: #e5e7eb;
}

.modal-body p {
    margin-bottom: 1rem;
    color: #d1d5db;
}

.btn-readmore {
    display: inline-block;
    background: linear-gradient(135deg, rgba(212,175,55,0.15) 0%, rgba(212,175,55,0.05) 100%);
    border: 1px solid rgba(212,175,55,0.4);
    color: var(--color-gold);
    padding: 0.6rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: var(--spacing-md);
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.btn-readmore:hover {
    background: linear-gradient(135deg, rgba(212,175,55,0.3) 0%, rgba(212,175,55,0.15) 100%);
    border-color: rgba(212,175,55,0.8);
    color: #ffffff;
    box-shadow: 0 0 20px rgba(212,175,55,0.4);
    transform: translateY(-2px);
}

/* Arrows */
.arrows-container {
    margin-top: var(--spacing-md);
    text-align: left;
}
.arrow-group {
    margin-bottom: var(--spacing-sm);
}
.arrow-label {
    font-weight: 600;
    color: var(--pastel-brown-light);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}
.arrow-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.arrow-tag {
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}
.arrow-tag.achieved {
    background: rgba(30, 215, 96, 0.15);
    color: #1ed760;
    border: 1px solid rgba(30, 215, 96, 0.3);
}
.arrow-tag.empty {
    background: rgba(229, 9, 20, 0.15);
    color: #e50914;
    border: 1px solid rgba(229, 9, 20, 0.3);
}
.arrow-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}
.grid-cell.isolated {
    border: 1px dashed rgba(229, 9, 20, 0.8);
    position: relative;
}
.grid-cell.isolated::after {
    content: '!';
    position: absolute;
    top: 2px;
    right: 4px;
    color: #e50914;
    font-size: 0.8rem;
    font-weight: bold;
}
.grid-cell.active {
    cursor: pointer;
    transition: var(--transition);
}
.grid-cell.active:hover {
    background: rgba(0,0,0,0.05);
    box-shadow: inset 0 0 10px rgba(0,0,0,0.05);
}

/* Back To Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--text-heading);
    color: var(--text-inverse);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    transform: translateY(-3px);
    background: var(--color-primary);
}

/* Register Section */
.register-section {
    background: var(--bg-main);
    border-top: 1px solid var(--border-divider);
    padding: var(--space-64) var(--space-24);
    margin-top: var(--space-64);
    text-align: center;
}
.register-title {
    font-size: 32px;
    margin-bottom: var(--space-16);
    color: var(--color-gold);
    font-family: var(--font-heading);
}
.register-desc {
    color: var(--text-muted);
    margin-bottom: var(--space-32);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-size: 16px;
}
.register-form {
    max-width: 400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
}
.register-input {
    background: var(--bg-card);
}

/* FOOTER UI KIT */
.app-footer {
    background: #050508;
    color: var(--text-muted);
    padding: var(--space-64) 0 0 0;
    font-family: var(--font-body);
    border-top: 1px solid var(--border-divider);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-24);
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-32);
    margin-bottom: var(--space-48);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: var(--space-16);
}

.footer-col-1 p {
    font-size: 16px;
    line-height: 1.6;
    max-width: 300px;
}

.footer-container h4 {
    font-family: var(--font-heading);
    color: #FFFFFF;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--space-24);
}

.footer-container ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-container ul li {
    margin-bottom: var(--space-16);
}

.footer-container a {
    color: #FFFFFF;
    text-decoration: none;
    font-size: 16px;
    transition: var(--transition);
}

.footer-container a:hover {
    color: var(--color-primary);
}

.footer-col-4 p {
    margin-bottom: var(--space-8);
    font-size: 16px;
}

.footer-bottom {
    border-top: 1px solid #333333;
    padding: var(--space-24);
    text-align: center;
    color: #666666;
    font-size: 14px;
}