/* ==================== VARIÁVEIS E RESET ==================== */
:root {
    --primary-color: #1db954;
    --dark-bg: #121212;
    --darker-bg: #0a0a0a;
    --light-bg: #1e1e1e;
    --lighter-bg: #282828;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-tertiary: #808080;
    --accent: #1ed760;
    --danger: #e74c3c;
    --warning: #f39c12;
    --success: #27ae60;
    --border-color: #282828;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.7);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.dark-theme {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
    min-height: 100vh;
}

/* ==================== CONTAINERS ==================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.main-content {
    padding: 40px 20px;
    min-height: calc(100vh - 200px);
}

/* ==================== NAVBAR ==================== */
.navbar {
    background-color: var(--darker-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--accent);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 200px;
}

.search-bar {
    flex: 1;
    min-width: 250px;
}

.search-form {
    display: flex;
    gap: 10px;
}

.search-form input {
    flex: 1;
    padding: 10px 15px;
    background-color: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-primary);
    outline: none;
    transition: all 0.3s ease;
}

.search-form input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(29, 185, 84, 0.3);
}

.search-form button {
    padding: 10px 20px;
    background-color: var(--primary-color);
    border: none;
    border-radius: 25px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
}

.search-form button:hover {
    background-color: var(--accent);
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: 500;
    position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--accent);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--accent);
}

/* ==================== BOTÕES ==================== */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-primary);
}

.btn-primary:hover {
    background-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(29, 185, 84, 0.4);
}

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

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

.btn-danger {
    background-color: var(--danger);
    color: var(--text-primary);
}

.btn-danger:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
}

.btn-small {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-lg {
    padding: 15px 40px;
    font-size: 16px;
}

/* ==================== FORMULÁRIOS ==================== */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 8px rgba(29, 185, 84, 0.2);
    background-color: var(--lighter-bg);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 12px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.form-upload {
    background-color: var(--light-bg);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.file-upload {
    border: 2px dashed var(--primary-color);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-upload:hover {
    background-color: rgba(29, 185, 84, 0.1);
}

.file-upload input {
    display: none;
}

.file-info {
    margin-top: 10px;
    color: var(--text-secondary);
    font-size: 12px;
}

/* ==================== AUTHENTICATION ==================== */
.container-auth {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.form-box {
    background-color: var(--light-bg);
    padding: 40px;
    border-radius: 10px;
    width: 100%;
    max-width: 450px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.form-box h1 {
    margin-bottom: 30px;
    text-align: center;
    font-size: 28px;
    color: var(--accent);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-box .text-center {
    text-align: center;
    margin-top: 20px;
    color: var(--text-secondary);
}

.form-box .text-center a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

.form-box .text-center a:hover {
    text-decoration: underline;
}

/* ==================== ALERTAS ==================== */
.alert {
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 20px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-success {
    background-color: rgba(39, 174, 96, 0.2);
    border: 1px solid var(--success);
    color: #27ae60;
}

.alert-danger {
    background-color: rgba(231, 76, 60, 0.2);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.alert-warning {
    background-color: rgba(243, 156, 18, 0.2);
    border: 1px solid var(--warning);
    color: var(--warning);
}

/* ==================== CONTEÚDO ==================== */
.content-header {
    text-align: center;
    margin-bottom: 50px;
}

.content-header h1 {
    font-size: 48px;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--primary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.content-header p {
    font-size: 18px;
    color: var(--text-secondary);
}

.search-info {
    background-color: var(--light-bg);
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 30px;
    border-left: 4px solid var(--primary-color);
}

/* ==================== CARDS DE MÚSICA ==================== */
.musicas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.musica-card {
    background-color: var(--light-bg);
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.musica-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.musica-cover {
    position: relative;
    width: 100%;
    padding-bottom: 100%;
    overflow: hidden;
    background: linear-gradient(135deg, var(--lighter-bg) 0%, var(--border-color) 100%);
}

.musica-cover img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cover-placeholder {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    background: linear-gradient(135deg, var(--lighter-bg) 0%, var(--border-color) 100%);
}

.play-btn {
    position: absolute;
    bottom: 15px;
    right: 15px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--accent);
    border: none;
    cursor: pointer;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.musica-card:hover .play-btn {
    opacity: 1;
    transform: scale(1);
}

.play-btn:hover {
    background-color: var(--primary-color);
    transform: scale(1.1);
}

.musica-card-info {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.musica-card-info h3 {
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.musica-card-info .artista {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.musica-card-info .username {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 12px;
}

.musica-card-info .username a {
    color: var(--accent);
    text-decoration: none;
}

.musica-card-info .username a:hover {
    text-decoration: underline;
}

.musica-stats {
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: auto;
}

/* ==================== LISTA DE MÚSICAS ==================== */
.musicas-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.musica-item {
    background-color: var(--light-bg);
    padding: 20px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.musica-item:hover {
    background-color: var(--lighter-bg);
    border-color: var(--primary-color);
}

.musica-info h3 {
    font-size: 16px;
    margin-bottom: 5px;
}

.musica-artista {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.musica-meta {
    font-size: 12px;
    color: var(--text-tertiary);
}

.musica-actions {
    display: flex;
    gap: 10px;
}

/* ==================== PERFIL ==================== */
.profile-header {
    margin-bottom: 40px;
}

.profile-cover {
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent) 100%);
    border-radius: 10px;
    margin-bottom: -60px;
    position: relative;
}

.profile-info {
    display: flex;
    gap: 30px;
    align-items: flex-end;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.profile-avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background-color: var(--light-bg);
    border: 4px solid var(--dark-bg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    flex-shrink: 0;
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-details h1 {
    font-size: 32px;
    margin-bottom: 5px;
}

.profile-email {
    color: var(--text-secondary);
    font-size: 14px;
}

.profile-content {
    display: grid;
    gap: 40px;
    margin-top: 40px;
}

.profile-section {
    background-color: var(--light-bg);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.profile-section h2 {
    margin-bottom: 25px;
    color: var(--accent);
    font-size: 24px;
}

.form-profile {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ==================== PLAYER DE ÁUDIO ==================== */
.player-container {
    background-color: var(--darker-bg);
    border-top: 1px solid var(--border-color);
    padding: 15px 20px;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 200;
    box-shadow: var(--shadow-lg);
}

.player-controls {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 15px;
}

.control-btn {
    padding: 8px 12px;
    background-color: var(--primary-color);
    border: none;
    border-radius: 5px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
    min-width: 40px;
    height: 40px;
}

.control-btn:hover {
    background-color: var(--accent);
    transform: scale(1.05);
}

.progress-bar {
    flex: 1;
    height: 6px;
    background-color: var(--lighter-bg);
    border-radius: 3px;
    position: relative;
    cursor: pointer;
}

.progress {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 3px;
    width: 0%;
    transition: width 0.1s linear;
}

#seek-bar {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    cursor: pointer;
    outline: none;
}

#seek-bar::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--accent);
    cursor: pointer;
    box-shadow: var(--shadow);
}

#seek-bar::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background-color: var(--accent);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow);
}

#time-display {
    font-size: 12px;
    color: var(--text-secondary);
    min-width: 80px;
    text-align: right;
}

#audio-player {
    display: none;
}

/* ==================== PAGINAÇÃO ==================== */
.paginacao {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 50px 0;
    flex-wrap: wrap;
}

.paginacao .btn {
    min-width: 40px;
    text-align: center;
}

.paginacao .btn.active {
    background-color: var(--accent);
}

/* ==================== UTILITÁRIOS ==================== */
.text-center {
    text-align: center;
}

.no-results {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.no-results p {
    margin: 15px 0;
    font-size: 16px;
}

.no-results a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
}

.no-results a:hover {
    text-decoration: underline;
}

/* ==================== RESPONSIVO ==================== */
@media (max-width: 1024px) {
    .navbar .container {
        gap: 15px;
    }

    .search-bar {
        order: 3;
        width: 100%;
    }

    .nav-menu {
        gap: 15px;
    }

    .musicas-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }

    .content-header h1 {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 10px;
    }

    .logo {
        min-width: auto;
    }

    .nav-menu {
        width: 100%;
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
    }

    .musicas-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 15px;
    }

    .musica-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .musica-actions {
        width: 100%;
    }

    .musica-actions .btn {
        flex: 1;
    }

    .profile-info {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
        margin-bottom: 20px;
    }

    .profile-avatar {
        width: 120px;
        height: 120px;
    }

    .player-controls {
        gap: 10px;
    }

    .content-header h1 {
        font-size: 28px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }

    .main-content {
        padding: 20px 10px;
    }

    .musicas-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 10px;
    }

    .content-header h1 {
        font-size: 24px;
    }

    .content-header p {
        font-size: 14px;
    }

    .form-box {
        padding: 25px;
    }

    .profile-cover {
        height: 200px;
    }

    .profile-avatar {
        width: 100px;
        height: 100px;
        font-size: 50px;
    }

    .profile-details h1 {
        font-size: 24px;
    }

    .btn-lg {
        padding: 12px 24px;
        font-size: 14px;
    }

    .player-controls {
        gap: 8px;
    }

    #time-display {
        font-size: 10px;
        min-width: 70px;
    }
}

/* ==================== ANIMAÇÕES ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.musica-card {
    animation: fadeIn 0.5s ease;
}

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--lighter-bg);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}