/* Antigravity Theme - Dark Mode Premium UI */
:root {
    /* Background Colors */
    --ag-bg-dark: #0f1923;
    --ag-bg-darker: #0a1118;
    --ag-bg-card: rgba(26, 35, 50, 0.7);
    --ag-bg-card-solid: #1a2332;
    --ag-bg-input: rgba(15, 23, 42, 0.6);
    --ag-bg-hover: rgba(255, 255, 255, 0.05);

    /* Text Colors */
    --ag-text-primary: #e8eef5;
    --ag-text-secondary: #b8c5d6;
    --ag-text-muted: #6b7a8f;
    --ag-text-accent: #6db3f2;

    /* Accent Colors */
    --ag-accent-primary: #4a6fa5;
    --ag-accent-blue: #6db3f2;
    --ag-accent-orange: #ff6b35;
    --ag-accent-glow: rgba(74, 111, 165, 0.5);
    --ag-accent-success: #10b981;
    --ag-accent-warning: #f59e0b;
    --ag-accent-danger: #ef4444;

    /* Glassmorphism Effects */
    --ag-glass-blur: 10px;
    --ag-glass-bg: rgba(255, 255, 255, 0.05);
    --ag-glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --ag-glass-border-light: 1px solid rgba(255, 255, 255, 0.15);

    /* Shadows & Glows */
    --ag-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --ag-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --ag-shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
    --ag-glow-blue: 0 0 20px rgba(109, 179, 242, 0.3);
    --ag-glow-orange: 0 0 20px rgba(255, 107, 53, 0.3);

    /* Transitions */
    --ag-transition: all 0.3s ease-in-out;
    --ag-transition-fast: all 0.15s ease;

    /* Typography */
    --ag-font-sans: 'Inter', system-ui, -apple-system, sans-serif;

    /* Spacing */
    --ag-radius-sm: 6px;
    --ag-radius-md: 10px;
    --ag-radius-lg: 16px;
}

body.antigravity-mode {
    background-color: var(--ag-bg-dark);
    color: var(--ag-text-primary);
    font-family: var(--ag-font-sans);
    background-image:
        radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 25%),
        radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.08) 0%, transparent 25%);
    min-height: 100vh;
}

/* Typography Overrides */
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--ag-text-primary);
    font-weight: 600;
    letter-spacing: -0.025em;
}

p,
label,
li {
    color: var(--ag-text-secondary);
}

a {
    color: var(--ag-text-accent);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #60a5fa;
    /* Lighter accent */
}

/* Glassmorphic Card */
.ag-card {
    background: var(--ag-bg-card);
    backdrop-filter: blur(var(--ag-glass-blur));
    -webkit-backdrop-filter: blur(var(--ag-glass-blur));
    border: var(--ag-glass-border);
    border-radius: 12px;
    box-shadow: var(--ag-shadow-lg);
    padding: 1.5rem;
}

/* Inputs */
input[type="text"],
input[type="number"],
input[type="email"],
input[type="password"],
select,
textarea {
    background-color: var(--ag-bg-input) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    color: var(--ag-text-primary) !important;
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    transition: all 0.2s;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--ag-accent-primary) !important;
    box-shadow: 0 0 0 3px var(--ag-accent-glow);
}

/* Buttons */
.ag-btn-primary,
button[type="submit"],
.btn-primary {
    background: linear-gradient(135deg, var(--ag-accent-primary), #2563eb);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 0.6rem 1.2rem;
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.2s;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

.ag-btn-primary:hover,
button[type="submit"]:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 10px -2px rgba(59, 130, 246, 0.4);
}

/* Modals */
.modal-content,
.modal-overlay .bg-white {
    background: #1e293b !important;
    /* Dark slate */
    border: var(--ag-glass-border);
    color: var(--ag-text-primary);
}

/* Navbar / Header */
nav {
    background: rgba(15, 23, 42, 0.8) !important;
    backdrop-filter: blur(10px);
    border-bottom: var(--ag-glass-border);
}

/* Tables */
table {
    border-color: rgba(255, 255, 255, 0.1) !important;
}

th {
    background-color: rgba(0, 0, 0, 0.2) !important;
    color: var(--ag-text-primary) !important;
}

td {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--ag-bg-dark);
}

::-webkit-scrollbar-thumb {
    background: #475569;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* Stage Navigation (Glowing Steps) */
.ag-stage-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.25rem 2rem;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: 2rem;
    overflow-x: auto;
    width: 100%;
    /* Hide scrollbar */
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.ag-stage-nav::-webkit-scrollbar {
    display: none;
}

.ag-stage-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--ag-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0.75rem;
    border-radius: 9999px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.ag-stage-item:hover:not(.future) {
    background: rgba(255, 255, 255, 0.05);
    color: var(--ag-text-primary);
}

.ag-stage-item.active {
    color: white;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.2);
}

.ag-stage-item.completed {
    color: var(--ag-accent-success);
}

.ag-stage-item.future {
    opacity: 0.5;
    pointer-events: none;
    filter: grayscale(100%);
}

.ag-stage-item.welcome-blocked {
    opacity: 0.6;
    cursor: not-allowed;
}

.ag-stage-item.welcome-blocked:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* The circle number */
.ag-stage-number {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.8);
    border: 2px solid var(--ag-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    transition: all 0.3s ease;
    z-index: 2;
    flex-shrink: 0;
}

.ag-stage-item.active .ag-stage-number {
    background: var(--ag-accent-primary);
    border-color: var(--ag-accent-primary);
    color: white;
    box-shadow: 0 0 10px var(--ag-accent-primary);
}

.ag-stage-item.completed .ag-stage-number {
    background: var(--ag-accent-success);
    border-color: var(--ag-accent-success);
    color: #0f172a;
}

/* Connector Line */
.ag-stage-connector {
    flex-grow: 1;
    height: 2px;
    background: rgba(255, 255, 255, 0.08);
    /* Faint track */
    min-width: 20px;
    max-width: 60px;
    margin: 0 0.5rem;
    border-radius: 2px;
    transition: all 0.5s ease;
}

/* Lit connector */
.ag-stage-connector.active {
    background: linear-gradient(90deg, var(--ag-accent-success), var(--ag-text-secondary));
    box-shadow: 0 0 5px rgba(16, 185, 129, 0.2);
}

/* Fully completed path */
.ag-stage-connector.completed {
    background: var(--ag-accent-success);
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.3);
}

/* ============================================
   HERO SECTION
   ============================================ */
.ag-hero {
    text-align: center;
    padding: 4rem 2rem;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, rgba(74, 111, 165, 0.1) 0%, rgba(109, 179, 242, 0.05) 100%);
    border: var(--ag-glass-border);
    border-radius: var(--ag-radius-lg);
    position: relative;
    overflow: hidden;
}

.ag-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(109, 179, 242, 0.1) 0%, transparent 50%);
    animation: ag-pulse 8s ease-in-out infinite;
}

@keyframes ag-pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.ag-hero-title {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--ag-text-primary) 0%, var(--ag-accent-blue) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.ag-hero-subtitle {
    font-size: 1.25rem;
    color: var(--ag-text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
    position: relative;
    z-index: 1;
}

/* ============================================
   PROJECT CARDS (Glass Cards with Hover)
   ============================================ */
.ag-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.ag-project-card {
    background: var(--ag-glass-bg);
    backdrop-filter: blur(var(--ag-glass-blur));
    -webkit-backdrop-filter: blur(var(--ag-glass-blur));
    border: var(--ag-glass-border);
    border-radius: var(--ag-radius-md);
    padding: 1.5rem;
    transition: var(--ag-transition);
    cursor: pointer;
}

.ag-project-card:hover {
    transform: translateY(-5px);
    border-color: rgba(109, 179, 242, 0.3);
    box-shadow: var(--ag-glow-blue);
}

.ag-project-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--ag-text-primary);
    margin-bottom: 0.5rem;
}

.ag-project-card-meta {
    font-size: 0.85rem;
    color: var(--ag-text-muted);
}

/* ============================================
   SPLIT PANE LAYOUT (Wall Input)
   ============================================ */
.ag-split-pane {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 2rem;
    min-height: calc(100vh - 200px);
}

.ag-left-panel {
    background: var(--ag-bg-card);
    backdrop-filter: blur(var(--ag-glass-blur));
    -webkit-backdrop-filter: blur(var(--ag-glass-blur));
    border: var(--ag-glass-border);
    border-radius: var(--ag-radius-lg);
    padding: 1.5rem;
    overflow-y: auto;
    max-height: calc(100vh - 150px);
    position: sticky;
    top: 100px;
}

.ag-right-panel {
    background: var(--ag-bg-card);
    backdrop-filter: blur(var(--ag-glass-blur));
    -webkit-backdrop-filter: blur(var(--ag-glass-blur));
    border: var(--ag-glass-border);
    border-radius: var(--ag-radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

/* SVG Preview Container with Grid Pattern */
.ag-svg-preview {
    flex: 1;
    background: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 20px 20px;
    border: var(--ag-glass-border);
    border-radius: var(--ag-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    position: relative;
}

.ag-svg-preview svg {
    max-width: 100%;
    max-height: 100%;
}

/* ============================================
   WALL LIST
   ============================================ */
.ag-wall-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.ag-wall-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--ag-radius-sm);
    margin-bottom: 0.5rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid transparent;
    transition: var(--ag-transition-fast);
    cursor: pointer;
}

.ag-wall-item:hover {
    background: var(--ag-bg-hover);
    border-color: rgba(255, 255, 255, 0.1);
}

.ag-wall-item.active {
    background: rgba(74, 111, 165, 0.2);
    border-color: var(--ag-accent-primary);
    box-shadow: 0 0 10px rgba(74, 111, 165, 0.2);
}

.ag-wall-item.completed {
    border-left: 3px solid var(--ag-accent-success);
}

.ag-wall-number {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--ag-bg-darker);
    border: 2px solid var(--ag-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    flex-shrink: 0;
}

.ag-wall-item.active .ag-wall-number {
    background: var(--ag-accent-primary);
    border-color: var(--ag-accent-primary);
    color: white;
}

.ag-wall-item.completed .ag-wall-number {
    background: var(--ag-accent-success);
    border-color: var(--ag-accent-success);
    color: var(--ag-bg-dark);
}

/* ============================================
   COMPASS PICKER (Dark Theme)
   ============================================ */
.ag-compass-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.ag-compass-content {
    background: var(--ag-bg-card-solid);
    border: var(--ag-glass-border-light);
    border-radius: var(--ag-radius-lg);
    padding: 2rem;
    max-width: 400px;
    text-align: center;
    box-shadow: var(--ag-shadow-lg);
}

.ag-compass-canvas {
    margin: 1.5rem auto;
    border-radius: 50%;
    border: 2px solid var(--ag-accent-primary);
    box-shadow: var(--ag-glow-blue);
}

/* ============================================
   BUTTONS (Enhanced)
   ============================================ */
.ag-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: var(--ag-radius-sm);
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--ag-transition);
    border: none;
    text-decoration: none;
}

.ag-btn-primary {
    background: linear-gradient(135deg, var(--ag-accent-primary), #3a5a8a);
    color: white;
    box-shadow: var(--ag-shadow-sm);
}

.ag-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--ag-glow-blue);
}

.ag-btn-orange {
    background: linear-gradient(135deg, var(--ag-accent-orange), #e55a2b);
    color: white;
    box-shadow: var(--ag-shadow-sm);
}

.ag-btn-orange:hover {
    transform: translateY(-2px);
    box-shadow: var(--ag-glow-orange);
}

.ag-btn-ghost {
    background: transparent;
    color: var(--ag-text-secondary);
    border: var(--ag-glass-border);
}

.ag-btn-ghost:hover {
    background: var(--ag-bg-hover);
    color: var(--ag-text-primary);
}

.ag-btn-lg {
    padding: 0.9rem 2rem;
    font-size: 1rem;
}

/* ============================================
   FORM GROUPS
   ============================================ */
.ag-form-group {
    margin-bottom: 1.25rem;
}

.ag-form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--ag-text-secondary);
    margin-bottom: 0.5rem;
}

.ag-form-input {
    width: 100%;
    padding: 0.6rem 0.9rem;
    background: var(--ag-bg-input);
    border: var(--ag-glass-border);
    border-radius: var(--ag-radius-sm);
    color: var(--ag-text-primary);
    font-size: 0.95rem;
    transition: var(--ag-transition-fast);
}

.ag-form-input:focus {
    outline: none;
    border-color: var(--ag-accent-primary);
    box-shadow: 0 0 0 3px var(--ag-accent-glow);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
    .ag-split-pane {
        grid-template-columns: 1fr;
    }
    
    .ag-left-panel {
        position: static;
        max-height: none;
    }
    
    .ag-hero-title {
        font-size: 2rem;
    }
}