/* ── Spotune Design System & Typography ──────────────────────────────────────── */

:root {
    --bg-main: #06080a;
    --bg-card: rgba(13, 17, 23, 0.75);
    --border-color: rgba(255, 255, 255, 0.05);
    
    /* Green-first Primary Branding Colors */
    --primary: hsl(140, 70%, 45%);
    --primary-hover: hsl(140, 75%, 52%);
    --primary-glow: rgba(29, 185, 84, 0.25);
    
    /* Amber/Gold complementary Accent colors */
    --accent: hsl(45, 100%, 50%);
    --accent-hover: hsl(45, 100%, 58%);
    --accent-glow: rgba(245, 158, 11, 0.25);
    
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --text-dark: #4b5563;
    
    --error: #ef4444;
    --warning: #f59e0b;
    --success: hsl(140, 70%, 45%);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Outfit', sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

.scroll-margin {
    scroll-margin-top: 100px;
}

/* Background glowing spots */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(150px);
    z-index: 0;
    pointer-events: none;
    opacity: 0.4;
}

.orb-1 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 80%);
    top: -100px;
    left: -150px;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 80%);
    bottom: 10%;
    right: -150px;
}

.wrapper {
    position: relative;
    z-index: 10;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Sticky Premium Navigation Bar ────────────────────────────────────────── */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: rgba(6, 8, 10, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    position: sticky;
    top: 1rem;
    z-index: 100;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    transition: all 0.3s;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.logo-img {
    height: 28px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff 0%, var(--text-muted) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger {
    display: block;
    width: 20px;
    height: 2px;
    background: #fff;
    position: relative;
    transition: background 0.2s;
}

.hamburger::before, .hamburger::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 2px;
    background: #fff;
    left: 0;
    transition: all 0.25s;
}

.hamburger::before { top: -6px; }
.hamburger::after { top: 6px; }

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    top: 0;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
}

.nav-link-support {
    color: var(--accent);
    font-weight: 700;
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    padding: 0.3rem 0.8rem;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.05);
}

.nav-link-support:hover {
    color: #fff;
    background: var(--accent);
}

.api-config-wrapper {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.api-server-input {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    width: 170px;
    outline: none;
    transition: all 0.2s;
}

.api-server-input:focus {
    width: 220px;
    border-color: var(--primary);
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
}

.health-badge {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

@media (max-width: 900px) {
    .nav-toggle { display: block; }
    .nav-menu {
        position: absolute;
        top: 4.5rem;
        left: 0;
        width: 100%;
        background: #0d1117;
        border: 1px solid var(--border-color);
        border-radius: 12px;
        padding: 2rem;
        flex-direction: column;
        gap: 1.5rem;
        display: none;
        box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    }
    .nav-menu.active { display: flex; }
    .api-config-wrapper { display: none; }
}

/* ── Hero Section ────────────────────────────────────────────────────────── */
.hero-section {
    text-align: center;
    max-width: 800px;
    margin: 6rem auto 5rem auto;
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.15rem;
    line-height: 1.6;
    color: var(--text-muted);
}

/* ── Download Section ────────────────────────────────────────────────────── */
.main-download-card {
    max-width: 800px;
    margin: 0 auto;
}

.search-box {
    display: flex;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    padding: 0.4rem;
    border-radius: 14px;
    margin-bottom: 2rem;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.3);
}

.search-box input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-size: 1rem;
    padding: 0.6rem 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    border: none;
    outline: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    background: var(--primary);
    color: #000;
    padding: 0.7rem 1.4rem;
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 15px var(--primary-glow);
}

.config-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
    animation: fadeIn 0.4s ease-out;
}

@media (max-width: 600px) {
    .config-grid { grid-template-columns: 1fr; }
}

.sub-glass-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 1.2rem;
}

.meta-content {
    display: flex;
    gap: 1.2rem;
}

.album-artwork {
    width: 90px;
    height: 90px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.meta-details h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
}

.meta-details p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.6rem;
}

.extra-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.meta-tag {
    font-size: 0.7rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    color: var(--text-muted);
}

.lookup-timer-badge {
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 600;
    margin-top: 0.6rem;
}

.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.styled-select {
    width: 100%;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    outline: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%239ca3af'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 0.85rem;
}

.styled-select:focus {
    border-color: var(--primary);
}

.btn-action {
    width: 100%;
    padding: 0.85rem;
    background: var(--primary);
    color: #000;
    border-radius: 8px;
}

.btn-action:hover {
    background: var(--primary-hover);
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 4rem 1.5rem;
}

.empty-state-logo {
    width: 60px;
    height: 60px;
    object-fit: contain;
    margin-bottom: 1.2rem;
    filter: drop-shadow(0 0 10px var(--primary-glow));
    animation: bounce 3s infinite ease-in-out;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.empty-state p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Loader Spinner Frame */
.loading-frame {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 3rem 0;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.05);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s infinite linear;
    margin-bottom: 1.2rem;
}

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

.loading-frame p {
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Progress Frame */
.progress-frame, .success-frame {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-top: 1rem;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
}

.progress-header h4 {
    font-size: 1rem;
    font-weight: 600;
}

.progress-percent {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
}

.bar-track {
    width: 100%;
    height: 6px;
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 0.8rem;
}

.bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 10px;
    transition: width 0.25s ease-out;
}

.progress-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.progress-actions {
    display: flex;
    gap: 0.4rem;
}

.btn-micro {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    border-radius: 6px;
    cursor: pointer;
}

.btn-micro:hover {
    background: rgba(255,255,255,0.1);
}

.btn-micro-danger:hover {
    background: var(--error);
    border-color: var(--error);
}

/* Success Frame */
.success-frame {
    text-align: center;
}

.success-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1.5rem;
}

.success-checkmark {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary-glow);
    border: 1px solid var(--primary);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
}

.success-details {
    max-width: 320px;
    margin: 0 auto 1.5rem auto;
    background: rgba(0,0,0,0.25);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.detail-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    padding: 0.3rem 0;
}

.detail-row span { color: var(--text-muted); }

.btn-save {
    width: 100%;
    max-width: 320px;
    padding: 0.9rem;
}

/* ── 3. Support Section ──────────────────────────────────────────────────── */
.support-section {
    margin-top: 5rem;
}

.support-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2rem;
    align-items: center;
}

@media (max-width: 768px) {
    .support-grid { grid-template-columns: 1fr; }
}

.support-content h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.support-content p {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 1.2rem;
}

.support-list {
    list-style: none;
}

.support-list li {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    padding-left: 1.2rem;
    position: relative;
}

.support-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

.ko-fi-card {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.ko-fi-heart {
    font-size: 2.2rem;
    display: block;
    margin-bottom: 0.6rem;
    animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.ko-fi-card h4 {
    font-size: 1.1rem;
    margin-bottom: 1.2rem;
}

.btn-support {
    width: 100%;
    background: var(--accent);
    color: #000;
    padding: 0.85rem;
    font-size: 0.95rem;
}

.btn-support:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 15px var(--accent-glow);
}

/* ── 4. Features Section ─────────────────────────────────────────────────── */
.features-section {
    margin-top: 6rem;
}

.features-header {
    text-align: center;
    margin-bottom: 3rem;
}

.features-header h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
}

.features-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.feature-item {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 12px;
    transition: transform 0.2s;
}

.feature-item:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 1.8rem;
    display: block;
    margin-bottom: 0.8rem;
}

.feature-item h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-item p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Rotating Quick Tips Card */
.tips-card {
    background: rgba(29, 185, 84, 0.03);
    border-color: var(--primary-glow);
    padding: 1.2rem 1.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 2rem;
    border-radius: 12px;
}

.tips-header {
    display: flex;
    align-items: center;
}

.tips-badge {
    background: var(--primary-glow);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
}

.tips-content {
    font-size: 0.95rem;
    color: var(--text-main);
    line-height: 1.4;
    transition: opacity 0.3s;
}

/* ── 5. Feedback Section ─────────────────────────────────────────────────── */
.feedback-section {
    margin-top: 6rem;
}

.feedback-card {
    max-width: 600px;
    margin: 0 auto;
}

.feedback-header {
    text-align: center;
    margin-bottom: 2rem;
}

.feedback-header h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
}

.feedback-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.styled-input {
    width: 100%;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 0.85rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    outline: none;
}

.styled-input:focus, .styled-textarea:focus {
    border-color: var(--primary);
}

.styled-textarea {
    width: 100%;
    height: 120px;
    background: rgba(0,0,0,0.3);
    border: 1px solid var(--border-color);
    color: #fff;
    padding: 0.85rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    outline: none;
    resize: none;
}

.feedback-response-msg {
    margin-top: 1rem;
    font-size: 0.85rem;
    text-align: center;
}

.feedback-response-msg.success { color: var(--success); }
.feedback-response-msg.error { color: var(--error); }

/* ── 6. Footer ───────────────────────────────────────────────────────────── */
.footer {
    margin-top: auto;
    padding: 3rem 0 1.5rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-dark);
    font-size: 0.8rem;
}

/* ── Modals / Overlays ───────────────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal-card {
    background: #0d1117;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    max-width: 480px;
    width: 100%;
    box-shadow: 0 20px 50px rgba(0,0,0,0.6);
    overflow: hidden;
    animation: modalSlide 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes modalSlide {
    from { transform: translateY(15px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 1.8rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
}

.close-modal {
    background: none;
    border: none;
    font-size: 1.6rem;
    color: var(--text-muted);
    cursor: pointer;
}

.close-modal:hover {
    color: #fff;
}

.modal-body {
    padding: 1.8rem;
}

.modal-body p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1.2rem;
}

.cancel-options-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.cancel-option-btn {
    text-align: left;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 10px;
    cursor: pointer;
    color: #fff;
    transition: background 0.2s;
}

.cancel-option-btn:hover {
    background: rgba(255,255,255,0.06);
    border-color: var(--primary);
}

.cancel-option-btn strong {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 0.15rem;
}

.cancel-option-btn span {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: block;
    line-height: 1.3;
}