/* ============================================
   Orbit Playlist – Google-Style Space UI
   ============================================ */

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

:root {
    --bg-deep: #020306;
    --text-primary: #f8f9fa;
    --text-secondary: #9aa0a6;
    --text-dim: #5f6368;

    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-bg-hover: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-focus: rgba(255, 255, 255, 0.2);

    --accent-blue: #8ab4f8;
    --accent-purple: #c58af9;
    --accent-red: #f28b82;

    --font-display: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
    -webkit-tap-highlight-color: transparent;
}

/* ---- Canvases & Background ---- */
canvas {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

#starfield {
    z-index: 0;
}

#cosmic-dust {
    z-index: 1;
    mix-blend-mode: screen;
    opacity: 0.3;
}

.ambient-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(200px);
    opacity: 0.08;
    pointer-events: none;
    mix-blend-mode: screen;
    z-index: 1;
}

.glow-blue {
    width: 1000px;
    height: 1000px;
    background: #2b70c9;
    top: -200px;
    right: -200px;
    animation: breathe 25s infinite alternate;
}

.glow-purple {
    width: 1200px;
    height: 1200px;
    background: #3d1b66;
    bottom: -300px;
    left: -200px;
    animation: breathe 30s infinite alternate-reverse;
}

@keyframes breathe {
    from {
        transform: scale(0.95);
        opacity: 0.05;
    }

    to {
        transform: scale(1.05);
        opacity: 0.12;
    }
}

.page-wrapper {
    position: relative;
    z-index: 10;
}

/* ================================================
   Navbar  (Floating Pill)
   ================================================ */
.navbar {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    background: rgba(20, 22, 28, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    z-index: 100;
    width: 90%;
    max-width: 900px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    transition: background .3s;
}

.navbar__brand {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.navbar__logo {
    font-size: 1.2rem;
}

.navbar__name {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    color: var(--text-primary);
}

.navbar__links {
    display: flex;
    list-style: none;
    gap: .5rem;
}

.navbar__link {
    font-size: .85rem;
    font-weight: 400;
    padding: .4rem 1rem;
    border-radius: 100px;
    color: var(--text-secondary);
    transition: color .25s, background .25s;
}

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

.navbar__link--active {
    color: var(--bg-deep);
    background: var(--text-primary);
    font-weight: 500;
}

.navbar__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.navbar__hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform .3s, opacity .3s;
}

.navbar__hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger.active span:nth-child(2) {
    opacity: 0;
}

.navbar__hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* ================================================
   Orbit Header
   ================================================ */
.orbit-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 140px 1.5rem 1.5rem;
    position: relative;
}

.orbit-header__icon {
    width: 56px;
    height: 56px;
    margin-bottom: 1rem;
    color: var(--accent-purple);
}

.orbit-header__icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}

.orbit-header__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 500;
    letter-spacing: -0.5px;
    margin-bottom: .6rem;
    color: var(--text-primary);
}

.orbit-header__subtitle {
    max-width: 520px;
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 300;
}

/* ================================================
   Add Video Section (Clean Media Input)
   ================================================ */
.add-section {
    display: flex;
    justify-content: center;
    padding: 2rem clamp(1rem, 4vw, 3rem) 1rem;
}

.add-card {
    position: relative;
    width: 100%;
    max-width: 680px;
    border-radius: 100px;
    padding: 1.5rem 2rem;
    background: rgba(255, 255, 255, 0.015);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}

.add-card__heading {
    display: none;
    /* Hide heading, keep it cleaner like a massive search bar */
}

.add-card__form {
    display: flex;
    flex-direction: column;
    gap: .5rem;
}

/* Input group */
.input-group {
    display: flex;
    align-items: center;
    gap: 0;
}

.input-group__icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    margin-right: 1rem;
    color: var(--text-secondary);
}

.input-group__field {
    flex: 1;
    padding: .5rem 1rem .5rem 0;
    background: transparent;
    border: none;
    outline: none;
    font-family: var(--font-body);
    font-size: 1.1rem;
    color: var(--text-primary);
}

.input-group__field::placeholder {
    color: var(--text-dim);
}

.input-group__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    background: var(--text-primary);
    color: var(--bg-deep);
    transition: transform .2s, background .2s;
}

.input-group__btn svg {
    width: 20px;
    height: 20px;
}

.input-group__btn:hover {
    transform: scale(1.05);
    background: #fff;
}

.add-card__hint {
    font-size: .8rem;
    min-height: 1.2em;
    text-align: center;
    transition: color .3s;
    margin-top: .5rem;
}

.add-card__hint.error {
    color: var(--accent-red);
}

.add-card__hint.success {
    color: var(--accent-green);
}

/* ================================================
   Now Playing (Cinematic Main Player)
   ================================================ */
.now-playing {
    padding: 1.5rem clamp(1rem, 4vw, 3rem) 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: .6rem;
    color: var(--text-primary);
}

.player-wrapper {
    border-radius: 24px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(12px);
}

.player-frame {
    width: 100%;
    aspect-ratio: 16/9;
    background: #000;
}

.player-frame iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.player-info {
    padding: 1.5rem;
}

.player-info__title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: .25rem;
    color: var(--text-primary);
}

.player-info__channel {
    font-size: .9rem;
    color: var(--text-secondary);
}

/* ================================================
   Playlist Section (Glass Grid)
   ================================================ */
.playlist-section {
    padding: 2rem clamp(1rem, 4vw, 3rem) 6rem;
    max-width: 1200px;
    margin: 0 auto;
}

.playlist-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.playlist-count {
    font-size: .8rem;
    font-weight: 500;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: .2rem .8rem;
    border-radius: 100px;
    margin-left: .5rem;
    vertical-align: middle;
}

.clear-btn {
    display: flex;
    align-items: center;
    gap: .4rem;
    padding: .5rem 1.2rem;
    border-radius: 100px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: .85rem;
    font-weight: 400;
    font-family: var(--font-body);
    cursor: pointer;
    transition: all .2s;
}

.clear-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* ---- Video Card ---- */
.video-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    cursor: pointer;
    transition: transform .4s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow .4s, border-color .4s;
    opacity: 0;
    transform: translateY(20px);
}

.video-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.video-card:hover {
    transform: translateY(-4px);
    border-color: var(--glass-border-focus);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
    background: rgba(255, 255, 255, 0.035);
}

/* Thumbnail */
.video-card__thumb {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: rgba(0, 0, 0, 0.5);
    overflow: hidden;
    border-bottom: 1px solid var(--glass-border);
}

.video-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.85;
    transition: opacity .4s, transform .5s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.video-card:hover .video-card__thumb img {
    opacity: 1;
    transform: scale(1.05);
}

.video-card__play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity .3s;
}

.video-card:hover .video-card__play-overlay {
    opacity: 1;
}

.video-card__play-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    transition: transform .2s;
}

.video-card:hover .video-card__play-btn {
    transform: scale(1.05);
}

.video-card__play-btn svg {
    width: 24px;
    height: 24px;
    color: var(--bg-deep);
    margin-left: 2px;
    /* optical center */
}

/* Number badge */
.video-card__number {
    position: absolute;
    top: 12px;
    left: 12px;
    width: 28px;
    height: 28px;
    border-radius: 100px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .75rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* Card body */
.video-card__body {
    padding: 1.25rem;
}

.video-card__title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: .25rem;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.video-card__id {
    font-size: .75rem;
    color: var(--text-dim);
}

.video-card__remove {
    width: 32px;
    height: 32px;
    border-radius: 100px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    line-height: 1;
    opacity: 0;
    transition: all .2s;
    backdrop-filter: blur(8px);
}

.video-card:hover .video-card__remove {
    opacity: 1;
}

.video-card__remove:hover {
    color: #f28b82;
    background: rgba(242, 139, 130, 0.1);
    border-color: rgba(242, 139, 130, 0.3);
}

/* ================================================
   Empty State
   ================================================ */
.empty-orbit {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 6rem 1rem;
    text-align: center;
    color: var(--text-dim);
}

.empty-orbit__rings {
    opacity: 0.5;
    margin-bottom: 2rem;
}

.empty-orbit__text {
    font-size: .95rem;
}

/* ================================================
   Footer
   ================================================ */
.footer {
    text-align: center;
    padding: 2.5rem 1rem;
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: .85rem;
}

/* ================================================
   Responsive
   ================================================ */
@media (max-width: 768px) {
    .navbar__links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(20, 22, 28, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1.5rem;
        border-radius: 20px;
        border: 1px solid var(--glass-border);
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
    }

    .navbar__links.open {
        display: flex;
    }

    .navbar__hamburger {
        display: flex;
    }

    .orbit-header {
        padding-top: 110px;
    }
}