/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    --primary: #6c5ce7;
    --primary-hover: #5a4bd1;
    --secondary: #a29bfe;
    --accent: #ff6b6b;
    --bg-dark: #0f0f1a;
    --bg-card: #1a1a2e;
    --text-primary: #ffffff;
    --text-secondary: #b0b0c8;
    --text-muted: #7a7a95;
    --border-subtle: rgba(255, 255, 255, 0.06);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-full: 50px;
    --shadow-lg: 0 25px 50px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 60px rgba(108, 92, 231, 0.3);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* ========================================
   Particles Background
   ======================================== */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: floatUp linear infinite;
    opacity: 0;
}

@keyframes floatUp {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-10vh) scale(1.5);
        opacity: 0;
    }
}

/* Moving gradient orb */
body::before {
    content: '';
    position: fixed;
    top: -30%;
    left: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
    animation: orbFloat 12s ease-in-out infinite alternate;
}

body::after {
    content: '';
    position: fixed;
    bottom: -30%;
    right: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(255, 107, 107, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    pointer-events: none;
    animation: orbFloat 15s ease-in-out infinite alternate-reverse;
}

@keyframes orbFloat {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(60px, -40px) scale(1.2); }
}

/* ========================================
   Main Container
   ======================================== */
.container {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2.5rem 2rem;
    max-width: 650px;
    width: 90%;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Icon / Logo
   ======================================== */
.icon-wrapper {
    margin-bottom: 1.8rem;
}

.icon-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 0 40px rgba(108, 92, 231, 0.4);
    animation: pulse 2s ease-in-out infinite;
    color: white;
}

.icon-circle svg {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 40px rgba(108, 92, 231, 0.4);
    }
    50% {
        box-shadow: 0 0 70px rgba(108, 92, 231, 0.7);
    }
}

/* ========================================
   Main Title
   ======================================== */
.main-title {
    margin-bottom: 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.title-line {
    display: block;
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #ffffff 0%, #c0c0e0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-line.accent {
    font-size: clamp(1.6rem, 4vw, 2.5rem);
    font-weight: 600;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   Description
   ======================================== */
.description {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.9;
    margin-bottom: 2.5rem;
    max-width: 500px;
    margin-inline: auto;
}

/* ========================================
   Countdown Timer
   ======================================== */
.countdown {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 0.8rem 0.5rem;
    min-width: 75px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.countdown-item:hover {
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(108, 92, 231, 0.2);
}

.countdown-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.05em;
}

.countdown-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.countdown-separator {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary);
    animation: blink 1s step-end infinite;
    margin-top: -0.5rem;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ========================================
   Buttons
   ======================================== */
.buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.8rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    font-family: inherit;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    opacity: 0;
    transition: opacity 0.3s;
}

.btn:hover::after {
    opacity: 1;
}

.btn:active {
    transform: scale(0.96);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #a29bfe);
    color: white;
    box-shadow: 0 8px 25px rgba(108, 92, 231, 0.35);
}

.btn-primary:hover {
    box-shadow: 0 12px 35px rgba(108, 92, 231, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-subtle);
}

.btn-secondary:hover {
    border-color: var(--secondary);
    color: var(--secondary);
    transform: translateY(-2px);
}

/* ========================================
   Social Links
   ======================================== */
.social-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    transition: var(--transition);
}

.social-link:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(108, 92, 231, 0.25);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    position: relative;
    z-index: 1;
    margin-top: 2rem;
    padding: 1.2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-heart {
    display: inline-block;
    animation: heartBeat 1.2s ease-in-out infinite;
    color: var(--accent);
}

@keyframes heartBeat {
    0%, 100% { transform: scale(1); }
    14% { transform: scale(1.3); }
    28% { transform: scale(1); }
    42% { transform: scale(1.3); }
    70% { transform: scale(1); }
}

/* ========================================
   Modal Overlay
   ======================================== */
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}

.overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* ========================================
   Modal
   ======================================== */
.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.85);
    z-index: 101;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    width: 90%;
    max-width: 420px;
    text-align: center;
    opacity: 0;
    pointer-events: none;
    transition: all 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: var(--shadow-lg);
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
    transform: translate(-50%, -50%) scale(1);
}

.modal-close {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.3rem;
    border-radius: 50%;
    transition: var(--transition);
    display: inline-flex;
}

.modal-close:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.08);
}

.modal-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    margin-bottom: 1.2rem;
}

.modal-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.modal-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.modal-input {
    padding: 0.85rem 1.2rem;
    font-size: 1rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-subtle);
    background: var(--bg-dark);
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
    font-family: inherit;
    text-align: left;
}

.modal-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
}

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

.modal-submit {
    justify-content: center;
    width: 100%;
}

.modal-success {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 0;
}

.modal-success p {
    color: var(--text-secondary);
    font-weight: 500;
}

/* ========================================
   Toast Notification
   ======================================== */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-full);
    z-index: 200;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: var(--shadow-lg);
    transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
}

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

.toast.success {
    border-color: #4ade80;
}

.toast.error {
    border-color: var(--accent);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 600px) {
    .container {
        padding: 1.5rem 1.2rem;
    }

    .icon-circle {
        width: 80px;
        height: 80px;
    }

    .icon-circle svg {
        width: 48px;
        height: 48px;
    }

    .countdown-item {
        min-width: 60px;
        padding: 0.6rem 0.3rem;
    }

    .countdown-number {
        font-size: 1.4rem;
    }

    .countdown-separator {
        font-size: 1.3rem;
    }

    .buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .modal {
        padding: 2rem 1.5rem;
    }
}

/* ========================================
   Accessibility: Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}