/* ========================================
   BLINK - Ephemeral Image Sharing
   Modern Dark Theme with Glassmorphism
   ======================================== */

/* CSS Custom Properties */
:root {
    /* Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a24;
    --bg-glass: rgba(255, 255, 255, 0.03);
    --bg-glass-hover: rgba(255, 255, 255, 0.06);

    --accent: #7c3aed;
    --accent-light: #8b5cf6;
    --accent-dark: #6d28d9;
    --accent-glow: rgba(124, 58, 237, 0.4);

    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.3);
    --warning: #f59e0b;
    --warning-glow: rgba(245, 158, 11, 0.3);
    --error: #ef4444;
    --error-glow: rgba(239, 68, 68, 0.3);

    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;

    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);

    /* Typography */
    --font-display: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--accent-glow);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Animated Background */
.bg-gradient {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(124, 58, 237, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 100%, rgba(59, 130, 246, 0.1), transparent),
        radial-gradient(ellipse 40% 60% at 10% 50%, rgba(168, 85, 247, 0.08), transparent);
    z-index: -3;
}

.bg-noise {
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    z-index: -2;
    pointer-events: none;
}

.floating-orbs {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent) 0%, rgba(124, 58, 237, 0) 70%);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #3b82f6 0%, rgba(59, 130, 246, 0) 70%);
    bottom: -50px;
    left: -50px;
    animation-delay: -7s;
}

.orb-3 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #a855f7 0%, rgba(168, 85, 247, 0) 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30px, -30px) scale(1.05);
    }

    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }

    75% {
        transform: translate(20px, 10px) scale(1.02);
    }
}

/* Container */
.container {
    max-width: 520px;
    margin: 0 auto;
    padding: var(--space-xl);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
}

/* Header */
.header {
    text-align: center;
    padding-top: var(--space-2xl);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--accent);
    animation: pulse-glow 2s ease-in-out infinite;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

@keyframes pulse-glow {

    0%,
    100% {
        filter: drop-shadow(0 0 8px var(--accent-glow));
    }

    50% {
        filter: drop-shadow(0 0 20px var(--accent-glow));
    }
}

.logo-text {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 400;
    margin-bottom: var(--space-lg);
}

/* Play Store Button */
.play-store-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-base);
    box-shadow: 0 4px 20px var(--accent-glow);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.play-store-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
    border-color: rgba(255, 255, 255, 0.2);
}

.play-store-icon {
    width: 24px;
    height: 24px;
}

/* Upload Section */
.upload-section {
    width: 100%;
}

.upload-zone {
    position: relative;
    width: 100%;
    min-height: 280px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 2px dashed var(--border);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    overflow: hidden;
}

.upload-zone:hover {
    border-color: var(--accent);
    background: var(--bg-glass-hover);
    box-shadow: var(--shadow-glow);
}

.upload-zone.drag-over {
    border-color: var(--accent-light);
    background: rgba(124, 58, 237, 0.1);
    transform: scale(1.02);
    box-shadow: var(--shadow-glow);
}

.upload-zone.uploading {
    pointer-events: none;
}

.upload-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-xl);
    transition: opacity var(--transition-base);
}

.upload-zone.uploading .upload-content {
    opacity: 0;
    transform: scale(0.9);
}

.upload-icon {
    width: 64px;
    height: 64px;
    color: var(--accent);
    opacity: 0.8;
    transition: all var(--transition-base);
}

.upload-zone:hover .upload-icon {
    transform: translateY(-5px);
    opacity: 1;
}

.upload-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.upload-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Upload Progress */
.upload-progress {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}

.upload-zone.uploading .upload-progress {
    opacity: 1;
}

.progress-ring {
    position: relative;
    width: 100px;
    height: 100px;
}

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

.progress-bg {
    fill: none;
    stroke: var(--border);
    stroke-width: 6;
}

.progress-bar {
    fill: none;
    stroke: var(--accent);
    stroke-width: 6;
    stroke-linecap: round;
    stroke-dasharray: 283;
    stroke-dashoffset: 283;
    transition: stroke-dashoffset var(--transition-fast);
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
}

.progress-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Preview Section */
.preview-section {
    width: 100%;
    animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.preview-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.preview-image-container {
    position: relative;
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-secondary);
}

.preview-image {
    width: 100%;
    height: auto;
    max-height: 300px;
    object-fit: contain;
    display: block;
}

.preview-overlay {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.preview-image-container:hover .preview-overlay {
    opacity: 1;
}

/* Timer */
.timer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.timer-ring {
    position: relative;
    width: 120px;
    height: 120px;
}

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

.timer-bg {
    fill: none;
    stroke: var(--border);
    stroke-width: 8;
}

.timer-bar {
    fill: none;
    stroke: var(--success);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 339.29;
    stroke-dashoffset: 0;
    transition: stroke-dashoffset 1s linear, stroke var(--transition-base);
    filter: drop-shadow(0 0 8px var(--success-glow));
}

.timer-ring.warning .timer-bar {
    stroke: var(--warning);
    filter: drop-shadow(0 0 8px var(--warning-glow));
}

.timer-ring.critical .timer-bar {
    stroke: var(--error);
    filter: drop-shadow(0 0 8px var(--error-glow));
    animation: pulse 0.5s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }
}

.timer-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.timer-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.timer-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.timer-warning {
    color: var(--text-tertiary);
    font-size: 0.85rem;
    text-align: center;
}

/* Link Section */
.link-section {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.link-box {
    display: flex;
    gap: var(--space-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-xs);
    transition: border-color var(--transition-base);
}

.link-box:focus-within {
    border-color: var(--accent);
}

.link-input {
    flex: 1;
    background: transparent;
    border: none;
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-primary);
    outline: none;
    min-width: 0;
}

.link-input::selection {
    background: var(--accent);
    color: white;
}

.btn-copy {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-md);
    background: var(--accent);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-copy:hover {
    background: var(--accent-light);
}

.btn-copy svg {
    width: 18px;
    height: 18px;
}

.btn-copy.copied {
    background: var(--success);
}

.copy-icon,
.check-icon {
    transition: all var(--transition-fast);
}

.btn-copy.copied .copy-icon {
    display: none;
}

.btn-copy.copied .check-icon {
    display: block;
}

.link-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: white;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-hover);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-icon:hover {
    background: rgba(0, 0, 0, 0.7);
}

.btn-icon svg {
    width: 18px;
    height: 18px;
}

/* Expired Section */
.expired-section {
    width: 100%;
    animation: slideUp 0.5s ease-out;
}

.expired-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    text-align: center;
}

.expired-icon {
    width: 80px;
    height: 80px;
    color: var(--error);
    opacity: 0.8;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    20%,
    60% {
        transform: translateX(-5px);
    }

    40%,
    80% {
        transform: translateX(5px);
    }
}

.expired-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.expired-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    width: 100%;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.feature {
    text-align: center;
    padding: var(--space-md);
}

.feature-icon {
    width: 32px;
    height: 32px;
    margin: 0 auto var(--space-sm);
    color: var(--accent);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature h3 {
    font-family: var(--font-display);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.feature p {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

/* Footer */
.footer {
    width: 100%;
    padding: var(--space-lg) var(--space-md);
    border-top: 1px solid var(--border);
    margin-top: var(--space-xl);
}

.footer-content {
    max-width: 520px;
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition-base);
}

.footer-links a:hover {
    color: var(--accent-light);
}

.footer-divider {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--border);
}

.footer-copyright {
    color: var(--text-tertiary);
    font-size: 0.75rem;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--space-xl);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: #ffffff;
    cursor: pointer;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.modal-close svg {
    width: 24px;
    height: 24px;
}

.modal-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
}

/* Toast */
.toast {
    position: fixed;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    padding: var(--space-sm) var(--space-lg);
    color: var(--text-primary);
    font-size: 0.9rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: all var(--transition-base);
    z-index: 1001;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Responsive */
@media (max-width: 640px) {
    .container {
        padding: var(--space-md);
        gap: var(--space-xl);
    }

    .header {
        padding-top: var(--space-xl);
    }

    .logo-icon {
        font-size: 2rem;
    }

    .logo-text {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .upload-zone {
        min-height: 240px;
    }

    .upload-icon {
        width: 48px;
        height: 48px;
    }

    .upload-title {
        font-size: 1.1rem;
    }

    .features {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .feature {
        display: flex;
        align-items: center;
        gap: var(--space-md);
        text-align: left;
        padding: var(--space-sm) 0;
    }

    .feature-icon {
        width: 24px;
        height: 24px;
        margin: 0;
        flex-shrink: 0;
    }

    .feature h3 {
        margin-bottom: 0;
    }

    .feature p {
        display: none;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .footer-divider {
        display: none;
    }

    .link-actions {
        grid-template-columns: 1fr;
    }
}

/* Touch Improvements */
@media (hover: none) {
    .upload-zone:hover {
        border-color: var(--border);
        background: var(--bg-glass);
        box-shadow: none;
    }

    .upload-zone:hover .upload-icon {
        transform: none;
    }

    .preview-overlay {
        opacity: 1;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}