/* ====================================================
   SPOTIFY CLONE — style.css  (100% responsivo)
   ==================================================== */

@import url('https://fonts.googleapis.com/css2?family=Circular+Std:wght@300;400;500;700;900&family=Poppins:wght@300;400;500;600;700;800&display=swap');

/* ---- CSS VARIABLES ---- */
:root {
    --spotify-green: #1DB954;
    --spotify-green-hover: #1ed760;
    --bg-black: #000000;
    --bg-base: #121212;
    --bg-highlight: #1a1a1a;
    --bg-card: #181818;
    --bg-card-hover: #282828;
    --bg-elevated: #242424;
    --text-primary: #FFFFFF;
    --text-secondary: #B3B3B3;
    --text-muted: #6a6a6a;
    --gradient-premium: linear-gradient(90deg, #AF2896 0%, #509BF5 100%);
    --sidebar-width: 300px;
    --topnav-height: 64px;
    --player-height: 90px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    --transition: 0.2s ease;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-black);
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
    font-family: inherit;
}

img {
    display: block;
    max-width: 100%;
}

.hidden {
    display: none !important;
}

/* ================================================
   TOP NAVIGATION
   ================================================ */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--topnav-height);
    background-color: var(--bg-black);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 10px;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.top-nav__logo {
    color: var(--spotify-green);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    transition: transform var(--transition);
}

.top-nav__logo:hover {
    transform: scale(1.05);
}

/* Centro da navbar — desktop: absoluto centralizado */
.top-nav__center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    width: 480px;
    max-width: calc(100vw - 320px);
}

.top-nav__home-btn {
    background-color: var(--bg-elevated);
    color: #ffffff90;
    border: none;
    width: 50px;
    height: 45px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 17px;
    flex-shrink: 0;
    transition: background-color var(--transition), transform var(--transition);
    text-decoration: none;
}

.top-nav__home-btn:hover {
    background-color: #3a3a3a;
    transform: scale(1.04);
}

.top-nav__search {
    flex: 1;
    display: flex;
    align-items: center;
    background-color: var(--bg-elevated);
    border-radius: var(--radius-full);
    padding: 10px 16px;
    gap: 10px;
    border: 2px solid transparent;
    transition: border-color var(--transition), background-color var(--transition);
    min-width: 0;
}

.top-nav__search:focus-within {
    border-color: var(--text-primary);
    background-color: var(--bg-highlight);
}

.top-nav__search i {
    color: #ffffff90;
    font-size: 18px;
    flex-shrink: 0;
}

.top-nav__search input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    width: 100%;
    min-width: 0;
}

.top-nav__search input::placeholder {
    color: var(--text-secondary);
}

.top-nav__ai-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 15px;
    display: flex;
    align-items: center;
    padding: 4px 0 4px 12px;
    border-left: 1px solid var(--text-muted);
    margin-left: 4px;
    transition: color var(--transition);
    flex-shrink: 0;
}

.top-nav__ai-btn:hover {
    color: var(--text-primary);
}

.top-nav__right {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
    margin-left: auto;
}

.top-nav__divider {
    width: 1px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
    margin: 0 4px;
}

.top-nav__link {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 700;
    padding: 6px 8px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    transition: color var(--transition), background-color var(--transition);
}

.top-nav__link:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

.top-nav__link--signup {
    color: var(--text-primary);
    font-size: 14px;
    padding: 8px 14px;
}

.top-nav__link--signup:hover {
    background: rgba(255, 255, 255, 0.08);
}

.top-nav__link--login {
    background: var(--text-primary);
    color: var(--bg-black);
    font-size: 14px;
    font-weight: 700;
    padding: 10px 28px;
    border-radius: var(--radius-full);
    transition: background-color var(--transition), transform var(--transition);
}

.top-nav__link--login:hover {
    background: #e8e8e8;
    transform: scale(1.03);
    color: var(--bg-black);
}

/* ================================================
   LAYOUT
   ================================================ */
.layout {
    display: flex;
    min-height: 100vh;
    padding-top: var(--topnav-height);
    padding-bottom: var(--player-height);
}

/* ================================================
   SIDEBAR
   ================================================ */
.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background-color: var(--bg-base);
    padding: 24px 12px 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: sticky;
    top: var(--topnav-height);
    height: calc(100vh - var(--topnav-height) - var(--player-height));
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--bg-elevated) transparent;
}

.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 3px;
}

.sidebar__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 4px;
}

.sidebar__title {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: color var(--transition);
}

.sidebar__title:hover {
    color: var(--text-primary);
}

.sidebar__create-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: var(--radius-full);
    transition: color var(--transition), background-color var(--transition);
}

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

.sidebar__card {
    background-color: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar__card h5 {
    font-size: 14px;
    font-weight: 700;
}

.sidebar__card p {
    font-size: 13px;
    color: var(--text-secondary);
}

.sidebar__action-btn {
    background: var(--text-primary);
    color: var(--bg-black);
    border: none;
    border-radius: var(--radius-full);
    padding: 8px 18px;
    font-size: 13px;
    font-weight: 700;
    align-self: flex-start;
    margin-top: 6px;
    transition: background-color var(--transition), transform var(--transition);
}

.sidebar__action-btn:hover {
    background-color: #e8e8e8;
    transform: scale(1.03);
}

.sidebar__footer {
    margin-top: auto;
    padding-top: 16px;
}

.sidebar__footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 4px 10px;
    margin-bottom: 35px;
}

.sidebar__footer-links a {
    color: var(--text-muted);
    font-size: 12px;
    transition: color var(--transition);
    margin-top: 5px;
}

.sidebar__footer-links a:hover {
    color: var(--text-primary);
}

.sidebar__lang-btn {
    background: transparent;
    border: 1px solid var(--text-secondary);
    color: var(--text-primary);
    border-radius: var(--radius-full);
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    justify-content: center;
    transition: border-color var(--transition), background-color var(--transition), transform var(--transition);
}

.sidebar__lang-btn:hover {
    border-color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.06);
    transform: scale(1.02);
}

/* ================================================
   MAIN CONTENT
   ================================================ */
.main-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    background: linear-gradient(180deg, #1a1a2e 0%, #121212 200px, #121212 100%);
    scrollbar-width: thin;
    scrollbar-color: var(--bg-elevated) transparent;
    min-width: 0;
}

.main-content::-webkit-scrollbar {
    width: 8px;
}

.main-content::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 4px;
}

#homeView {
    padding: 32px 24px 24px;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

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

/* ================================================
   SECTIONS
   ================================================ */
.content-section {
    margin-bottom: 40px;
    animation: fadeIn 0.5s ease both;
}

.content-section:nth-child(1) {
    animation-delay: 0.05s;
}

.content-section:nth-child(2) {
    animation-delay: 0.12s;
}

.content-section:nth-child(3) {
    animation-delay: 0.19s;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
    gap: 8px;
}

.section-header h2 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.section-header__more {
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    transition: color var(--transition);
    white-space: nowrap;
    flex-shrink: 0;
}

.section-header__more:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

.cards-row {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 180px;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 12px;
    scrollbar-width: none;
    -ms-overflow-style: none;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.cards-row::-webkit-scrollbar {
    display: none;
}

/* ================================================
   MUSIC CARD
   ================================================ */
.music-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    transition: background-color var(--transition), transform var(--transition);
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-snap-align: start;
    position: relative;
    overflow: hidden;
}

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

.music-card__img-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.music-card__img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.music-card:hover .music-card__img-wrap img {
    transform: scale(1.04);
}

.music-card__explicit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--text-secondary);
    color: var(--bg-black);
    font-size: 9px;
    font-weight: 700;
    width: 16px;
    height: 16px;
    border-radius: 2px;
    margin-bottom: 2px;
    flex-shrink: 0;
}

.music-card__play-btn {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: var(--spotify-green);
    color: var(--bg-black);
    border: none;
    border-radius: var(--radius-full);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease, background-color var(--transition);
    box-shadow: var(--shadow);
}

.music-card:hover .music-card__play-btn {
    opacity: 1;
    transform: translateY(0);
}

.music-card__play-btn:hover {
    background-color: var(--spotify-green-hover);
}

.music-card__info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.music-card__title-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.music-card__name {
    font-size: 14px;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.music-card__artist {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
}

/* ================================================
   ARTIST CARD
   ================================================ */
.artist-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    transition: background-color var(--transition), transform var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    scroll-snap-align: start;
    position: relative;
}

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

.artist-card__img-wrap {
    position: relative;
    width: 140px;
    height: 140px;
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.artist-card__img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.artist-card:hover .artist-card__img-wrap img {
    transform: scale(1.06);
}

.artist-card__play-btn {
    position: absolute;
    bottom: 70px;
    right: 16px;
    background: var(--spotify-green);
    color: var(--bg-black);
    border: none;
    border-radius: var(--radius-full);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    box-shadow: var(--shadow);
    z-index: 2;
}

.artist-card:hover .artist-card__play-btn {
    opacity: 1;
    transform: translateY(0);
}

.artist-card__play-btn:hover {
    background-color: var(--spotify-green-hover);
}

.artist-card__name {
    font-size: 14px;
    font-weight: 700;
    text-align: center;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.artist-card__type {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
    margin-top: -10px;
}

/* ================================================
   ALBUM VIEW
   ================================================ */
.album-view {
    animation: fadeIn 0.35s ease;
}

.album-view__header {
    display: flex;
    align-items: flex-end;
    gap: 28px;
    padding: 60px 24px 28px;
    background: linear-gradient(180deg, #2a1a4e 0%, #1a1a2e 60%, #121212 100%);
    position: relative;
}

.album-view__back-btn {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: background-color var(--transition), transform var(--transition);
    z-index: 2;
}

.album-view__back-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.08);
}

.album-view__cover-wrap {
    flex-shrink: 0;
}

.album-view__cover {
    width: 200px;
    height: 200px;
    border-radius: var(--radius-md);
    object-fit: cover;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    display: block;
}

.album-view__meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.album-view__type {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
    color: var(--text-secondary);
}

.album-view__title {
    font-size: 48px;
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.05;
}

.album-view__artist {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

.album-view__info {
    font-size: 13px;
    color: var(--text-muted);
}

.album-view__controls {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px 24px 16px;
    flex-wrap: wrap;
}

.album-view__play-btn {
    background: var(--spotify-green);
    color: var(--bg-black);
    border: none;
    border-radius: 50%;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: transform var(--transition), background-color var(--transition);
    box-shadow: 0 8px 24px rgba(29, 185, 84, 0.3);
    flex-shrink: 0;
}

.album-view__play-btn:hover {
    transform: scale(1.06);
    background-color: var(--spotify-green-hover);
}

.album-view__icon-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 20px;
    padding: 6px;
    border-radius: 50%;
    transition: color var(--transition), transform var(--transition);
}

.album-view__icon-btn:hover {
    color: var(--text-primary);
    transform: scale(1.1);
}

/* ================================================
   TRACK LIST
   ================================================ */
.track-list-header {
    display: grid;
    grid-template-columns: 48px 1fr 80px;
    gap: 12px;
    padding: 8px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.track-list-header__num {
    text-align: center;
}

.track-list-header__duration {
    text-align: right;
}

.track-list {
    padding: 0 12px 24px;
}

.track-row {
    display: grid;
    grid-template-columns: 48px 1fr 80px;
    gap: 12px;
    align-items: center;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color 0.15s ease;
    user-select: none;
}

.track-row:hover {
    background-color: rgba(255, 255, 255, 0.06);
}

.track-row.playing {
    background-color: rgba(29, 185, 84, 0.08);
}

.track-row.playing .track-row__name {
    color: var(--spotify-green);
}

.track-row__num {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 15px;
    min-width: 24px;
}

.track-row__play-icon {
    color: var(--text-primary);
    font-size: 13px;
}

.track-row__info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.track-row__name {
    font-size: 15px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-row__artist {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-row__dur {
    font-size: 13px;
    color: var(--text-muted);
    text-align: right;
}

/* wave animation */
.track-row__wave {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 16px;
}

.track-row__wave span {
    display: block;
    width: 3px;
    background: var(--spotify-green);
    border-radius: 2px;
    animation: waveBar 0.9s ease-in-out infinite;
}

.track-row__wave span:nth-child(1) {
    height: 8px;
    animation-delay: 0s;
}

.track-row__wave span:nth-child(2) {
    height: 14px;
    animation-delay: 0.15s;
}

.track-row__wave span:nth-child(3) {
    height: 10px;
    animation-delay: 0.3s;
}

.track-row__wave span:nth-child(4) {
    height: 6px;
    animation-delay: 0.1s;
}

@keyframes waveBar {

    0%,
    100% {
        transform: scaleY(0.5);
    }

    50% {
        transform: scaleY(1);
    }
}

/* ================================================
   PLAYER BAR
   ================================================ */
.player-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--player-height);
    background: #181818;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 8px;
    z-index: 150;
}

/* -- Esquerda -- */
.player-bar__left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 0 0 auto;
    width: 30%;
    min-width: 160px;
    overflow: hidden;
}

.player-bar__thumb-wrap {
    position: relative;
    width: 56px;
    height: 56px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--bg-elevated);
}

.player-bar__thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.player-bar__thumb-placeholder {
    width: 56px;
    height: 56px;
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 18px;
}

.player-bar__track-info {
    min-width: 0;
    flex: 1;
}

.player-bar__track-name {
    display: block;
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.player-bar__track-artist {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.player-bar__like-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 16px;
    padding: 6px;
    border-radius: 50%;
    transition: color var(--transition), transform var(--transition);
    flex-shrink: 0;
}

.player-bar__like-btn:hover {
    color: var(--text-primary);
    transform: scale(1.15);
}

.player-bar__like-btn.liked {
    color: var(--spotify-green);
}

/* -- Centro -- */
.player-bar__center {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    max-width: 700px;
    margin: 0 auto;
    min-width: 0;
}

.player-bar__controls {
    display: flex;
    align-items: center;
    gap: 4px;
}

.player-bar__ctrl-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 16px;
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    transition: color var(--transition), transform var(--transition);
}

.player-bar__ctrl-btn:hover {
    color: var(--text-primary);
    transform: scale(1.1);
}

.player-bar__ctrl-btn.active {
    color: var(--spotify-green);
}

.player-bar__play-btn {
    background: var(--text-primary);
    color: var(--bg-black);
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    transition: background-color var(--transition), transform var(--transition);
    margin: 0 6px;
    flex-shrink: 0;
}

.player-bar__play-btn:hover {
    background: #e8e8e8;
    transform: scale(1.06);
}

/* Progress bar */
.player-bar__progress-row {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
}

.player-bar__time {
    font-size: 11px;
    color: var(--text-muted);
    min-width: 36px;
    text-align: center;
    flex-shrink: 0;
}

.player-bar__progress-track {
    flex: 1;
    height: 4px;
    background: #535353;
    border-radius: 2px;
    position: relative;
    cursor: pointer;
    transition: height 0.1s ease;
}

.player-bar__progress-track:hover {
    height: 6px;
}

.player-bar__progress-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--text-primary);
    border-radius: 2px;
    pointer-events: none;
    width: 0%;
}

.player-bar__progress-track:hover .player-bar__progress-fill {
    background: var(--spotify-green);
}

.player-bar__progress-thumb {
    position: absolute;
    top: 50%;
    transform: translateY(-50%) translateX(-50%);
    left: 0%;
    width: 12px;
    height: 12px;
    background: var(--text-primary);
    border-radius: 50%;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.1s ease;
}

.player-bar__progress-track:hover .player-bar__progress-thumb {
    opacity: 1;
}

/* -- Direita -- */
.player-bar__right {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 0 0 auto;
    width: 30%;
    min-width: 130px;
    justify-content: flex-end;
}

.player-bar__volume-track {
    width: 90px;
    height: 4px;
    background: #535353;
    border-radius: 2px;
    position: relative;
    cursor: pointer;
    transition: height 0.1s ease;
}

.player-bar__volume-track:hover {
    height: 6px;
}

.player-bar__volume-fill {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--text-primary);
    border-radius: 2px;
    pointer-events: none;
    width: 70%;
}

.player-bar__volume-track:hover .player-bar__volume-fill {
    background: var(--spotify-green);
}

.player-bar__volume-thumb {
    position: absolute;
    top: 50%;
    transform: translateY(-50%) translateX(-50%);
    width: 12px;
    height: 12px;
    background: var(--text-primary);
    border-radius: 50%;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.1s ease;
}

.player-bar__volume-track:hover .player-bar__volume-thumb {
    opacity: 1;
}

/* ================================================
   PREMIUM BANNER
   ================================================ */
.premium-banner {
    position: fixed;
    bottom: var(--player-height);
    left: 0;
    right: 0;
    background: var(--gradient-premium);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 32px;
    gap: 12px;
    z-index: 140;
    animation: slideUp 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
    animation-delay: 1.2s;
    opacity: 0;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(100%);
    }

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

.premium-banner__text {
    display: flex;
    flex-direction: column;
    gap: 1px;
    min-width: 0;
}

.premium-banner__text h3 {
    font-size: 14px;
    font-weight: 700;
}

.premium-banner__text p {
    font-size: 13px;
    opacity: 0.9;
}

.premium-banner__btn {
    background: var(--text-primary);
    color: var(--bg-black);
    border: none;
    border-radius: var(--radius-full);
    padding: 10px 28px;
    font-size: 14px;
    font-weight: 700;
    white-space: nowrap;
    flex-shrink: 0;
    transition: background-color var(--transition), transform var(--transition);
}

.premium-banner__btn:hover {
    background-color: #e8e8e8;
    transform: scale(1.04);
}

.premium-banner__close {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.8);
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    flex-shrink: 0;
    transition: color var(--transition), transform var(--transition);
}

.premium-banner__close:hover {
    color: var(--text-primary);
    transform: rotate(90deg);
}

/* ================================================
   SCROLLBAR GLOBAL
   ================================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #3a3a3a;
}

/* ================================================
   UTILITY
   ================================================ */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

/* ========================================================
   RESPONSIVE — TABLET  (max 900px)
   ======================================================== */
@media (max-width: 900px) {
    :root {
        --sidebar-width: 0px;
        --topnav-height: 56px;
    }

    /* Oculta sidebar */
    .sidebar {
        display: none;
    }

    /* Navbar: esconde links secundários */
    .top-nav__right .top-nav__link:not(.top-nav__link--login):not(.top-nav__link--signup) {
        display: none;
    }

    .top-nav__divider {
        display: none;
    }

    /* Centro da navbar ocupa mais */
    .top-nav__center {
        position: static;
        transform: none;
        flex: 1;
        width: auto;
        max-width: none;
    }

    #homeView {
        padding: 20px 16px 16px;
    }

    .section-header h2 {
        font-size: 18px;
    }

    .cards-row {
        grid-auto-columns: 158px;
        gap: 12px;
    }

    .artist-card__img-wrap {
        width: 120px;
        height: 120px;
    }

    .artist-card__play-btn {
        bottom: 60px;
    }

    /* Album view */
    .album-view__title {
        font-size: 32px;
    }

    .album-view__cover {
        width: 160px;
        height: 160px;
    }

    .album-view__header {
        gap: 20px;
        padding: 56px 16px 24px;
    }

    /* Player - esconde volume */
    .player-bar__right {
        display: none;
    }

    .player-bar__left {
        width: auto;
        min-width: 140px;
    }

    .player-bar {
        padding: 0 12px;
        gap: 6px;
    }

    /* Premium banner */
    .premium-banner {
        padding: 10px 16px;
    }

    .premium-banner__text p {
        display: none;
    }
}

/* ========================================================
   RESPONSIVE — MOBILE  (max 640px)
   ======================================================== */
@media (max-width: 640px) {
    :root {
        --topnav-height: 56px;
        --player-height: 72px;
    }

    /* Navbar: esconde inscrever-se */
    .top-nav__link--signup {
        display: none;
    }

    .top-nav__ai-btn {
        display: none;
    }

    /* Busca mais compacta */
    .top-nav__search {
        padding: 8px 12px;
        gap: 8px;
    }

    .top-nav__search i {
        font-size: 16px;
    }

    .top-nav__search input {
        font-size: 13px;
    }

    .top-nav__link--login {
        padding: 8px 16px;
        font-size: 13px;
    }

    /* Home */
    #homeView {
        padding: 16px 12px 12px;
    }

    .content-section {
        margin-bottom: 28px;
    }

    .section-header {
        margin-bottom: 12px;
    }

    .section-header h2 {
        font-size: 16px;
    }

    .cards-row {
        grid-auto-columns: 140px;
        gap: 10px;
    }

    .music-card {
        padding: 12px;
        gap: 8px;
    }

    .music-card__name {
        font-size: 13px;
    }

    .music-card__artist {
        font-size: 11px;
    }

    .music-card__play-btn {
        width: 38px;
        height: 38px;
        font-size: 14px;
    }

    .artist-card {
        padding: 12px 8px;
        gap: 10px;
    }

    .artist-card__img-wrap {
        width: 108px;
        height: 108px;
    }

    .artist-card__play-btn {
        bottom: 52px;
        right: 8px;
        width: 38px;
        height: 38px;
        font-size: 13px;
    }

    .artist-card__name {
        font-size: 12px;
    }

    /* Album view */
    .album-view__header {
        flex-direction: column;
        align-items: flex-start;
        padding: 56px 16px 20px;
        gap: 16px;
    }

    .album-view__cover {
        width: 140px;
        height: 140px;
    }

    .album-view__title {
        font-size: 24px;
        letter-spacing: -0.5px;
    }

    .album-view__type {
        font-size: 10px;
    }

    .album-view__artist {
        font-size: 13px;
    }

    .album-view__info {
        font-size: 12px;
    }

    .album-view__controls {
        padding: 16px 16px 12px;
        gap: 14px;
    }

    .album-view__play-btn {
        width: 48px;
        height: 48px;
        font-size: 18px;
    }

    .album-view__icon-btn {
        font-size: 18px;
    }

    .track-list-header {
        padding: 6px 16px;
        font-size: 11px;
    }

    .track-list {
        padding: 0 4px 20px;
    }

    .track-row {
        padding: 7px 8px;
    }

    .track-row__name {
        font-size: 14px;
    }

    .track-row__artist {
        font-size: 12px;
    }

    .track-row__dur {
        font-size: 12px;
    }

    /* Player compacto */
    .player-bar {
        height: var(--player-height);
        padding: 0 12px;
        gap: 8px;
    }

    .player-bar__left {
        flex: 1;
        min-width: 0;
        width: auto;
        gap: 10px;
    }

    .player-bar__thumb-wrap {
        width: 44px;
        height: 44px;
    }

    .player-bar__thumb-placeholder {
        width: 44px;
        height: 44px;
        font-size: 15px;
    }

    .player-bar__track-name {
        font-size: 13px;
    }

    .player-bar__track-artist {
        font-size: 11px;
    }

    .player-bar__like-btn {
        display: none;
    }

    /* Centro do player: só play/pause + barra de progresso */
    .player-bar__center {
        max-width: none;
        width: auto;
        flex: 0 0 auto;
    }

    .player-bar__ctrl-btn {
        padding: 6px;
        font-size: 15px;
    }

    /* Esconde shuffle, prev, next e repeat no mobile — fica só o play */
    #playerShuffleBtn,
    #playerPrevBtn,
    #playerNextBtn,
    #playerRepeatBtn {
        display: none;
    }

    .player-bar__play-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
        margin: 0;
    }

    /* Esconde barra de progresso no mobile (espaço curto) */
    .player-bar__progress-row {
        display: none;
    }

    .player-bar__right {
        display: none;
    }

    /* Premium banner */
    .premium-banner {
        flex-direction: column;
        align-items: flex-start;
        padding: 14px 16px;
        gap: 10px;
    }

    .premium-banner__text p {
        display: block;
        font-size: 12px;
    }

    .premium-banner__btn {
        align-self: flex-start;
        padding: 8px 20px;
        font-size: 13px;
    }

    .premium-banner__close {
        position: absolute;
        top: 10px;
        right: 12px;
    }

    .premium-banner {
        position: relative;
    }
}

/* ========================================================
   RESPONSIVE — MOBILE PEQUENO  (max 380px)
   ======================================================== */
@media (max-width: 380px) {
    .top-nav {
        padding: 0 10px;
        gap: 6px;
    }

    .top-nav__logo svg {
        width: 26px;
        height: 26px;
    }

    .top-nav__link--login {
        padding: 7px 12px;
        font-size: 12px;
    }

    .cards-row {
        grid-auto-columns: 128px;
        gap: 8px;
    }

    #homeView {
        padding: 12px 10px 10px;
    }

    .album-view__cover {
        width: 120px;
        height: 120px;
    }

    .album-view__title {
        font-size: 20px;
    }
}