:root {
    --bg-dark: #05070c;
    --bg-card: rgba(13, 20, 38, 0.5);
    --border-color: rgba(255, 255, 255, 0.08);
    --main-green: #1db954; /* Spotify Green */
    --accent-purple: #a855f7; /* Apple Podcast Purple */
    --text-white: #ffffff;
    --text-gray: #9ca3af;
    --text-light: #e5e7eb;
    --error-red: #ef4444;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Background Orbs */
.background-orbs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.25;
    mix-blend-mode: screen;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--main-green) 0%, transparent 80%);
    top: -100px;
    right: -100px;
    animation: orbFloat 15s ease-in-out infinite alternate;
}

.orb-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-purple) 0%, transparent 80%);
    bottom: -150px;
    left: -150px;
    animation: orbFloat 20s ease-in-out infinite alternate-reverse;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #3b82f6 0%, transparent 80%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0.15;
}

@keyframes orbFloat {
    0% { transform: translateY(0) scale(1); }
    100% { transform: translateY(40px) scale(1.1); }
}

/* App Container */
.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Header */
.app-header {
    margin-bottom: 1rem;
}

.back-link {
    color: var(--text-gray);
    text-decoration: none;
    font-size: 0.9rem;
    display: inline-block;
    margin-bottom: 1rem;
    transition: color 0.3s;
}

.back-link:hover {
    color: var(--text-white);
}

.app-title {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #ffffff 30%, var(--text-gray) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.app-subtitle {
    color: var(--text-gray);
    font-size: 1rem;
}

/* Glass Card */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Control Panel */
.control-panel {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: stretch;
}

.panel-section {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.section-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
    font-family: 'Noto Sans JP', sans-serif;
}

.panel-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-gray);
    font-size: 0.9rem;
    font-weight: 700;
    position: relative;
}

.panel-divider::before,
.panel-divider::after {
    content: '';
    position: absolute;
    width: 1px;
    height: 40%;
    background: var(--border-color);
}

.panel-divider::before { top: 0; }
.panel-divider::after { bottom: 0; }

.panel-divider span {
    background: rgba(13, 20, 38, 0.8);
    padding: 0.5rem;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    z-index: 2;
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.01);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--accent-purple);
    background: rgba(168, 85, 247, 0.05);
}

.drop-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
}

.drop-zone-icon {
    font-size: 2.5rem;
}

.drop-zone-text {
    font-size: 0.95rem;
    color: var(--text-gray);
}

.browse-btn {
    color: var(--accent-purple);
    text-decoration: underline;
    font-weight: 600;
}

.file-input-hidden {
    display: none;
}

/* Direct Input */
.text-area-input {
    width: 100%;
    height: 140px;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    color: var(--text-white);
    font-family: monospace;
    font-size: 0.85rem;
    resize: none;
    line-height: 1.5;
    transition: border-color 0.3s;
}

.text-area-input:focus {
    outline: none;
    border-color: var(--main-green);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--main-green) 0%, #15803d 100%);
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(29, 185, 84, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(29, 185, 84, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, var(--accent-purple) 0%, #7e22ce 100%);
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(168, 85, 247, 0.25);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(168, 85, 247, 0.35);
}

.btn-text {
    background: none;
    border: none;
    color: var(--text-gray);
    cursor: pointer;
    font-size: 0.8rem;
    transition: color 0.3s;
}

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

/* Progress Panel */
.progress-panel {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    font-weight: 600;
}

.progress-status {
    color: var(--text-white);
}

.progress-percent {
    color: var(--main-green);
}

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--main-green), var(--accent-purple));
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* Console Log */
.console-log-wrapper {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.console-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    padding: 0.6rem 1rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-gray);
}

.console-log {
    height: 140px;
    overflow-y: auto;
    padding: 0.8rem 1rem;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.8rem;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.log-line {
    word-break: break-all;
}

.log-line.system { color: #60a5fa; }
.log-line.success { color: var(--main-green); }
.log-line.error { color: var(--error-red); }
.log-line.info { color: #eab308; }

/* Download Toolbar */
.download-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 2rem;
    border-color: rgba(168, 85, 247, 0.3);
    background: linear-gradient(90deg, rgba(13, 20, 38, 0.6) 0%, rgba(168, 85, 247, 0.08) 100%);
    animation: slideUp 0.4s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

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

.success-count {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text-white);
}

/* Results Grid */
.results-section {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.results-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.badge {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border-color);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-gray);
}

.artwork-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
}

/* Placeholder */
.grid-placeholder {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 5rem 2rem;
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    color: var(--text-gray);
    text-align: center;
    gap: 1rem;
}

.placeholder-icon {
    font-size: 3rem;
    opacity: 0.5;
}

/* Artwork Card */
.artwork-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    animation: scaleIn 0.3s ease-out forwards;
}

.artwork-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

@keyframes scaleIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.card-image-wrapper {
    aspect-ratio: 1 / 1;
    width: 100%;
    position: relative;
    background: rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.card-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.artwork-card:hover .card-image-wrapper img {
    transform: scale(1.05);
}

.source-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 0.2rem 0.5rem;
    border-radius: 8px;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-white);
    z-index: 2;
    text-transform: uppercase;
}

.source-badge.apple { background: var(--accent-purple); }
.source-badge.spotify { background: var(--main-green); }
.source-badge.rss { background: #eab308; }

.card-info {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    flex: 1;
}

.card-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-white);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 2.8em;
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-gray);
}

.card-actions {
    margin-top: auto;
}

.btn-card-download {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-white);
    padding: 0.5rem;
    font-size: 0.8rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-card-download:hover {
    background: var(--text-white);
    color: var(--bg-dark);
}

/* Helper utilities */
.hidden {
    display: none !important;
}

/* Responsive Grid Adjustments */
@media (max-width: 900px) {
    .control-panel {
        grid-template-columns: 1fr;
    }
    
    .panel-divider {
        height: 20px;
    }
    
    .panel-divider::before,
    .panel-divider::after {
        width: 40%;
        height: 1px;
    }
    
    .panel-divider::before { left: 0; top: 50%; }
    .panel-divider::after { right: 0; top: 50%; }
}