/* ===========================
   RESET & BASE STYLES
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Dark Theme Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #121218;
    --bg-card: rgba(25, 25, 35, 0.6);

    /* Neon/Glow Colors */
    --neon-purple: #b967ff;
    --neon-blue: #05d9e8;
    --neon-pink: #ff2a6d;
    --neon-green: #01ffc3;
    --neon-yellow: #ffea00;

    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b0b0c0;
    --text-muted: #6b6b7b;

    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0a0a0f 0%, #1a0a20 50%, #0a0a0f 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Background Animation */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 50%, rgba(185, 103, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(5, 217, 232, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 90%, rgba(255, 42, 109, 0.1) 0%, transparent 50%);
    z-index: -1;
    animation: bgPulse 15s ease-in-out infinite;
}

@keyframes bgPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

/* ===========================
   FIREWORKS CANVAS
   =========================== */
#fireworks-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    display: none;
}

#fireworks-canvas.active {
    display: block;
}

/* ===========================
   CONTAINER & LAYOUT
   =========================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
    position: relative;
    z-index: 1;
}

/* ===========================
   HEADER
   =========================== */
.header {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.header h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    letter-spacing: 2px;
}

.glow-text {
    text-shadow:
        0 0 10px var(--neon-purple),
        0 0 20px var(--neon-purple),
        0 0 30px var(--neon-blue),
        0 0 40px var(--neon-blue);
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% {
        text-shadow:
            0 0 10px var(--neon-purple),
            0 0 20px var(--neon-purple),
            0 0 30px var(--neon-blue);
    }
    50% {
        text-shadow:
            0 0 20px var(--neon-purple),
            0 0 30px var(--neon-purple),
            0 0 40px var(--neon-blue),
            0 0 50px var(--neon-blue);
    }
}

.subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-secondary);
    font-weight: 300;
    letter-spacing: 1px;
}

/* ===========================
   GLASSMORPHISM CARDS
   =========================== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    transition: left 0.5s ease;
}

.glass-card:hover::before {
    left: 100%;
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: var(--neon-purple);
    box-shadow:
        0 8px 32px rgba(185, 103, 255, 0.2),
        0 0 20px rgba(185, 103, 255, 0.1);
}

/* ===========================
   FEATURES GRID
   =========================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.card {
    animation: fadeInUp 0.6s ease-out backwards;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }
.card:nth-child(4) { animation-delay: 0.4s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================
   CARD CONTENT
   =========================== */
.card-header {
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: var(--spacing-sm);
}

.card-header h2 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    color: var(--neon-blue);
    margin-bottom: var(--spacing-xs);
}

.card-description {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.card-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* ===========================
   INPUT FIELDS
   =========================== */
.input-field {
    width: 100%;
    padding: var(--spacing-sm);
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: all 0.3s ease;
    font-family: inherit;
}

.input-field:focus {
    outline: none;
    border-color: var(--neon-purple);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 20px rgba(185, 103, 255, 0.2);
}

.input-field::placeholder {
    color: var(--text-muted);
}

.textarea-field {
    resize: vertical;
    min-height: 80px;
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--neon-purple), var(--neon-blue));
    color: white;
    box-shadow: 0 4px 15px rgba(185, 103, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(185, 103, 255, 0.5);
}

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

.btn-share {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-share:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--neon-blue);
}

/* ===========================
   MOOD & STATUS SELECTORS
   =========================== */
.mood-selector,
.status-selector {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.mood-label,
.status-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.mood-buttons,
.status-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xs);
}

.mood-btn,
.status-btn {
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mood-btn:hover,
.status-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--neon-purple);
}

.mood-btn.selected,
.status-btn.selected {
    background: linear-gradient(135deg, var(--neon-purple), var(--neon-blue));
    border-color: var(--neon-blue);
    box-shadow: 0 0 15px rgba(185, 103, 255, 0.4);
}

/* ===========================
   RESULT BOX
   =========================== */
.result-box {
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(185, 103, 255, 0.1), rgba(5, 217, 232, 0.1));
    border: 2px solid var(--neon-purple);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
    animation: resultFadeIn 0.5s ease-out;
    position: relative;
    overflow: hidden;
}

.result-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.05),
        transparent
    );
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

@keyframes resultFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.result-box p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.result-box .probability {
    font-size: 2rem;
    font-weight: 700;
    color: var(--neon-green);
    text-shadow: 0 0 10px var(--neon-green);
    margin-bottom: var(--spacing-xs);
    display: block;
}

.result-box.hidden {
    display: none;
}

/* ===========================
   SHARE SECTION
   =========================== */
.share-section {
    text-align: center;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.share-section h3 {
    color: var(--neon-blue);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

/* ===========================
   SUCCESS OVERLAY
   =========================== */
.success-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
    animation: fadeIn 0.5s ease-out;
}

.success-overlay.hidden {
    display: none;
}

.success-message {
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 700;
    text-align: center;
    animation: scaleIn 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ===========================
   COUNTDOWN OVERLAY
   =========================== */
.countdown-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.countdown-overlay.hidden {
    display: none;
}

.countdown-container {
    text-align: center;
    padding: var(--spacing-xl);
}

.countdown-container h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-lg);
    color: var(--neon-purple);
}

.countdown-display {
    font-size: clamp(3rem, 10vw, 6rem);
    font-weight: 700;
    color: var(--text-primary);
    text-shadow: 0 0 30px var(--neon-blue);
    margin-bottom: var(--spacing-md);
    font-family: 'Courier New', monospace;
}

.countdown-message {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* ===========================
   FOOTER
   =========================== */
.footer {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    border-top: 1px solid var(--glass-border);
    margin-top: var(--spacing-xl);
}

.footer p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.footer-note {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */
@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }

    .share-buttons {
        flex-direction: column;
    }

    .btn-share {
        width: 100%;
    }

    .header {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .container {
        padding: var(--spacing-sm);
    }

    .glass-card {
        padding: var(--spacing-md);
    }

    .mood-buttons,
    .status-buttons {
        grid-template-columns: 1fr;
    }
}

/* ===========================
   LOADING STATE
   =========================== */
.btn.loading {
    pointer-events: none;
    opacity: 0.7;
    position: relative;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid transparent;
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===========================
   UTILITY CLASSES
   =========================== */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }