/* Import dei font Google Inter e Outfit */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    --bg-gradient: linear-gradient(135deg, #0f0c20 0%, #15102a 50%, #06020f 100%);
    --accent-color: #7b2cbf;
    --accent-glow: rgba(123, 44, 191, 0.4);
    --accent-hover: #9d4edd;
    --success-color: #00f5d4;
    --success-glow: rgba(0, 245, 212, 0.3);
    --danger-color: #ff007f;
    --danger-glow: rgba(255, 0, 127, 0.3);
    
    --glass-bg: rgba(25, 18, 48, 0.45);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-highlight: rgba(255, 255, 255, 0.03);
    --text-primary: #f3f0fc;
    --text-secondary: #a29bbd;
    --text-muted: #6b6488;
    
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    --transition-smooth: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-body);
    background: var(--bg-gradient);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
    padding: 2rem 1.5rem;
    position: relative;
}

/* Bolle decorative di sfondo per creare profondità tridimensionale */
body::before, body::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    pointer-events: none;
    opacity: 0.25;
}

body::before {
    width: 350px;
    height: 350px;
    background: var(--accent-color);
    top: 10%;
    left: -100px;
}

body::after {
    width: 400px;
    height: 400px;
    background: #240046;
    bottom: 10%;
    right: -100px;
}

/* Contenitore Principale */
.app-container {
    width: 100%;
    max-width: 900px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    z-index: 1;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
    animation: fadeInDown 0.8s ease-out;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-main {
    flex: 1;
    text-align: left;
}

@media (max-width: 600px) {
    .app-header {
        flex-direction: column;
        align-items: center;
    }
    .header-main {
        text-align: center;
    }
}

.app-header h1 {
    font-family: var(--font-heading);
    font-size: 2.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(90deg, var(--text-primary) 30%, #b388ff 70%, var(--success-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.app-header p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.lang-switcher {
    display: flex;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 2px;
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.85rem;
    padding: 0.4rem 0.85rem;
    border-radius: 9px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

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

.lang-btn.active {
    background: var(--accent-color);
    color: white;
    box-shadow: 0 2px 8px var(--accent-glow);
}

/* Glassmorphism Card Base */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.25rem;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
    background-image: linear-gradient(var(--glass-highlight), transparent);
    transition: var(--transition-smooth);
    animation: fadeInUp 0.8s ease-out;
}

/* Drag and Drop Area */
.drop-zone {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    background: rgba(255, 255, 255, 0.01);
}

.drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--success-color);
    background: rgba(0, 245, 212, 0.04);
    box-shadow: 0 0 20px var(--success-glow);
}

.drop-zone.file-loaded {
    border-color: var(--accent-color);
    background: rgba(123, 44, 191, 0.04);
    box-shadow: 0 0 20px var(--accent-glow);
}

.drop-zone-icon {
    font-size: 3.5rem;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

.drop-zone:hover .drop-zone-icon {
    transform: translateY(-5px);
    color: var(--success-color);
}

.drop-zone.file-loaded .drop-zone-icon {
    color: var(--accent-color);
}

.drop-zone h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 600;
}

.drop-zone p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.file-input {
    display: none;
}

/* Stato Caricamento / Loader */
.loader-container {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    padding: 2rem 0;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.05);
    border-top: 4px solid var(--accent-color);
    border-right: 4px solid var(--success-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    box-shadow: 0 0 15px var(--accent-glow);
}

.progress-bar-bg {
    width: 100%;
    max-width: 300px;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--success-color));
    transition: width 0.2s ease;
}

/* Pulsanti */
.btn {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    padding: 0.85rem 1.75rem;
    border-radius: 14px;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    box-shadow: 0 6px 20px var(--accent-glow);
    transform: translateY(-2px);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-success {
    background: var(--success-color);
    color: #06020f;
    box-shadow: 0 4px 15px var(--success-glow);
}

.btn-success:hover {
    background: #00e5c4;
    box-shadow: 0 6px 20px var(--success-glow);
    transform: translateY(-2px);
}

/* Sezione Risultati */
.results-section {
    display: none;
    flex-direction: column;
    gap: 1.5rem;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.results-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.notebook-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.notebook-title {
    font-family: var(--font-heading);
    font-size: 1.45rem;
    font-weight: 700;
}

.notebook-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Lista / Tabella delle registrazioni */
.recordings-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 480px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

/* Scrollbar personalizzata per estetica coerente */
.recordings-list::-webkit-scrollbar {
    width: 6px;
}

.recordings-list::-webkit-scrollbar-track {
    background: transparent;
}

.recordings-list::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

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

.recording-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 16px;
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    transition: var(--transition-smooth);
}

.recording-item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.08);
    transform: translateX(3px);
}

.recording-details {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 0; /* Forza il corretto word-wrap/ellipsis */
}

.recording-name-clean {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.recording-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.recording-tag {
    background: rgba(123, 44, 191, 0.15);
    color: #b388ff;
    padding: 0.15rem 0.5rem;
    border-radius: 6px;
    font-weight: 500;
}

.recording-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Bottone di download traccia singola */
.btn-icon {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-icon:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-glow);
    color: white;
}

/* Alert Box */
.alert-box {
    display: none;
    align-items: flex-start;
    gap: 0.75rem;
    background: rgba(255, 0, 127, 0.08);
    border: 1px solid rgba(255, 0, 127, 0.2);
    border-radius: 16px;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    animation: shake 0.5s ease-in-out;
}

.alert-icon {
    color: var(--danger-color);
    font-size: 1.25rem;
}

.alert-message {
    font-size: 0.9rem;
    color: var(--text-primary);
    line-height: 1.4;
}

/* Footer dell'app */
footer.app-footer {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 1rem 0;
    margin-top: 1rem;
    animation: fadeIn 1.2s ease-out;
}

footer.app-footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-smooth);
}

footer.app-footer a:hover {
    color: var(--success-color);
}

/* ANIMAZIONI */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}

/* MEDIA QUERIES (Per cellulari e iPad in multitasking) */
@media (max-width: 600px) {
    body {
        padding: 1rem 1rem;
    }
    
    header h1 {
        font-size: 2.1rem;
    }
    
    .glass-card {
        padding: 1.5rem;
    }
    
    .results-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .btn {
        width: 100%;
    }
    
    .recording-item {
        padding: 0.85rem 1rem;
        gap: 1rem;
    }
}