/* ============================================================
   VideoSaver — Stylesheet
   Premium dark design with warm gradient accents
   ============================================================ */

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

:root {
    --bg-deep: #08080f;
    --bg-surface: rgba(255, 255, 255, 0.04);
    --bg-glass: rgba(255, 255, 255, 0.055);
    --bg-glass-hover: rgba(255, 255, 255, 0.1);
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-glass-hover: rgba(255, 255, 255, 0.16);

    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b8;
    --text-muted: #6b6b82;

    --accent-orange: #f97316;
    --accent-pink: #ec4899;
    --accent-purple: #8b5cf6;
    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;

    --gradient-main: linear-gradient(135deg, var(--accent-orange), var(--accent-pink), var(--accent-purple));
    --gradient-btn: linear-gradient(135deg, var(--accent-orange), var(--accent-pink));
    --gradient-blue: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));

    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;

    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-med: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* --- Background Orbs --- */
.bg-orbs {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.3;
    animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--accent-orange);
    top: -12%;
    left: -8%;
    animation-duration: 24s;
}

.orb-2 {
    width: 450px;
    height: 450px;
    background: var(--accent-pink);
    bottom: -10%;
    right: -8%;
    animation-duration: 28s;
    animation-delay: -6s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: var(--accent-purple);
    top: 35%;
    left: 55%;
    animation-duration: 32s;
    animation-delay: -12s;
}

.orb-4 {
    width: 300px;
    height: 300px;
    background: var(--accent-cyan);
    top: 60%;
    left: 10%;
    animation-duration: 26s;
    animation-delay: -18s;
    opacity: 0.2;
}

@keyframes orbFloat {

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

    25% {
        transform: translate(50px, -35px) scale(1.06);
    }

    50% {
        transform: translate(-25px, 45px) scale(0.94);
    }

    75% {
        transform: translate(35px, 15px) scale(1.04);
    }
}

/* --- Utility --- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

.hidden {
    display: none !important;
}

.glass-card {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: var(--shadow-card);
}

/* --- Layout --- */
.header,
.main,
.footer {
    position: relative;
    z-index: 1;
    max-width: 920px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Header --- */
.header {
    padding-top: 44px;
    padding-bottom: 8px;
    text-align: center;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.logo-icon {
    width: 44px;
    height: 44px;
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.logo-pro {
    font-weight: 700;
    font-size: 0.6em;
    vertical-align: super;
    background: var(--gradient-blue);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 460px;
    margin: 0 auto;
}

/* --- Input Section --- */
.input-section {
    margin-top: 32px;
    padding: 26px 26px 18px;
}

.input-wrapper {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-wrapper:focus-within {
    border-color: var(--accent-orange);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.15);
}

.input-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 16px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.url-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.95rem;
    padding: 14px 0;
    min-width: 0;
}

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

.scan-btn {
    flex-shrink: 0;
    position: relative;
    background: var(--gradient-btn);
    color: #fff;
    border: none;
    padding: 14px 28px;
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}

.scan-btn:hover:not(:disabled) {
    opacity: 0.9;
    transform: scale(1.02);
}

.scan-btn:active:not(:disabled) {
    transform: scale(0.98);
}

.scan-btn:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.scan-btn.loading .scan-btn-text {
    display: none;
}

.scan-btn-loader {
    display: none;
    align-items: center;
    gap: 8px;
}

.scan-btn.loading .scan-btn-loader {
    display: inline-flex;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

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

.input-error {
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--error);
    min-height: 1.2em;
}

/* --- Supported platforms --- */
.platforms {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 14px;
    flex-wrap: wrap;
}

.platform-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}

.platform-badge {
    display: inline-block;
    padding: 3px 10px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 100px;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
}

/* --- Status Section --- */
.status-section {
    margin-top: 24px;
}

.status-bar {
    padding: 18px 28px;
}

.status-steps {
    display: flex;
    align-items: center;
    justify-content: center;
}

.step {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    transition: color var(--transition-med);
}

.step.active {
    color: var(--accent-orange);
}

.step.done {
    color: var(--success);
}

.step-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: background var(--transition-med), box-shadow var(--transition-med);
    flex-shrink: 0;
}

.step.active .step-dot {
    background: var(--accent-orange);
    box-shadow: 0 0 10px var(--accent-orange);
    animation: pulse 1.2s ease-in-out infinite;
}

.step.done .step-dot {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
    animation: none;
}

@keyframes pulse {

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

    50% {
        transform: scale(1.4);
        opacity: 0.6;
    }
}

.step-line {
    width: 40px;
    height: 2px;
    background: var(--text-muted);
    opacity: 0.3;
    margin: 0 12px;
    transition: background var(--transition-med), opacity var(--transition-med);
}

.step-line.done {
    background: var(--success);
    opacity: 0.7;
}

/* --- Results --- */
.results-section {
    margin-top: 28px;
    animation: fadeSlideUp 0.5s ease-out;
}

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

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

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    flex-wrap: wrap;
    gap: 12px;
}

.results-title {
    font-size: 1.15rem;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-all-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--gradient-blue);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.download-all-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* --- Video Card --- */
.results-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.video-card {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 18px 22px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
    animation: fadeSlideUp 0.4s ease-out both;
}

.video-card:hover {
    border-color: var(--border-glass-hover);
    background: var(--bg-glass-hover);
    transform: translateY(-2px);
}

/* Thumbnail */
.video-card-thumb {
    flex-shrink: 0;
    width: 120px;
    height: 68px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-card-thumb-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-main);
    opacity: 0.8;
}

.video-card-thumb-placeholder svg {
    width: 28px;
    height: 28px;
    color: #fff;
}

.video-card-info {
    flex: 1;
    min-width: 0;
}

.video-card-title {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.video-card-url {
    font-size: 0.78rem;
    color: var(--text-muted);
    word-break: break-all;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
}

.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 100px;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-mp4 {
    background: rgba(249, 115, 22, 0.2);
    color: var(--accent-orange);
}

.badge-webm {
    background: rgba(139, 92, 246, 0.2);
    color: var(--accent-purple);
}

.badge-ogg {
    background: rgba(6, 182, 212, 0.2);
    color: var(--accent-cyan);
}

.badge-mov {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.badge-avi {
    background: rgba(34, 197, 94, 0.2);
    color: var(--success);
}

.badge-other {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

.badge-streaming {
    background: rgba(236, 72, 153, 0.2);
    color: var(--accent-pink);
}

.badge-source {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-muted);
    font-weight: 500;
}

.video-card-duration {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.video-card-actions {
    flex-shrink: 0;
    display: flex;
    gap: 8px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    background: var(--gradient-btn);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
}

.btn-download:hover:not(:disabled) {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-download:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-copy {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--bg-surface);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

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

/* --- Empty State --- */
.empty-state {
    margin-top: 28px;
    animation: fadeSlideUp 0.5s ease-out;
}

.empty-state-inner {
    text-align: center;
    padding: 44px 28px;
}

.empty-icon {
    color: var(--text-muted);
    margin-bottom: 16px;
}

.empty-state-inner h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.empty-state-inner p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    max-width: 400px;
    margin: 0 auto;
}

/* --- Ad Banners --- */
.ad-container {
    position: relative;
    z-index: 1;
    max-width: 920px;
    margin: 0 auto;
    padding: 0 24px;
}

.ad-top {
    margin-top: 20px;
}

.ad-mid {
    margin-top: 20px;
}

.ad-bottom {
    margin-top: 16px;
}

.ad-slot {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 90px;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed rgba(255, 255, 255, 0.08);
}

.ad-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 16px 24px;
    width: 100%;
    height: 90px;
}

.ad-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.15);
}

.ad-size {
    font-size: 0.72rem;
    color: rgba(255, 255, 255, 0.08);
    font-weight: 500;
}

/* --- Footer --- */
.footer {
    padding: 36px 24px 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.78rem;
}

/* --- Responsive --- */
@media (max-width: 640px) {
    .header {
        padding-top: 28px;
    }

    .logo-text {
        font-size: 1.4rem;
    }

    .tagline {
        font-size: 0.92rem;
    }

    .input-section {
        padding: 18px 14px 14px;
    }

    .input-wrapper {
        flex-direction: column;
        border-radius: var(--radius-sm);
    }

    .input-icon {
        padding: 12px 16px 0;
    }

    .url-input {
        padding: 12px 16px;
        width: 100%;
    }

    .scan-btn {
        width: 100%;
        padding: 14px;
        border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    }

    .status-steps {
        flex-direction: column;
        gap: 8px;
    }

    .step-line {
        width: 2px;
        height: 20px;
        margin: 0;
    }

    .video-card {
        flex-direction: column;
        text-align: center;
        gap: 12px;
        padding: 18px 14px;
    }

    .video-card-thumb {
        width: 100%;
        max-width: 200px;
        height: 112px;
    }

    .video-card-actions {
        width: 100%;
        justify-content: center;
    }

    .results-header {
        flex-direction: column;
        text-align: center;
    }

    .platforms {
        justify-content: center;
    }
}

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

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* stagger animation */
.video-card:nth-child(1) {
    animation-delay: 0s;
}

.video-card:nth-child(2) {
    animation-delay: 0.06s;
}

.video-card:nth-child(3) {
    animation-delay: 0.12s;
}

.video-card:nth-child(4) {
    animation-delay: 0.18s;
}

.video-card:nth-child(5) {
    animation-delay: 0.24s;
}