/* ===========================================
   StemScribe - Upload Section
   (Mode toggle, drop zone, skills, URL input,
    archive.org browse, submit button)
   =========================================== */

/* Upload Section */
.upload-section {
    background: linear-gradient(180deg, rgba(26, 26, 36, 0.7) 0%, rgba(19, 19, 26, 0.8) 100%);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 24px;
    padding: 2.5rem;
    margin-bottom: 3rem;
}

/* Mode Toggle */
.mode-toggle {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background: rgba(0,0,0,0.3);
    padding: 0.4rem;
    border-radius: 14px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.mode-btn {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-dim);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.mode-btn.active {
    background: linear-gradient(135deg, var(--psych-orange), var(--psych-pink));
    color: white;
    box-shadow: 0 4px 20px rgba(255, 123, 84, 0.3);
}

/* Drop Zone */
.drop-zone {
    border: 2px dashed rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 4rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.drop-zone::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,123,84,0.03), rgba(198,120,221,0.03));
    opacity: 0;
    transition: opacity 0.3s;
}

.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--psych-orange);
    transform: scale(1.01);
}

.drop-zone:hover::before, .drop-zone.dragover::before {
    opacity: 1;
}

.drop-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    display: inline-block;
    animation: bob 3s ease-in-out infinite;
}

@keyframes bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.drop-title {
    font-family: 'Righteous', cursive;
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.drop-subtitle {
    font-family: 'Outfit', sans-serif;
    color: var(--text-dim);
    font-size: 0.9rem;
}

.file-input {
    display: none;
}

/* Skills Selector */
.skills-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.skills-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.skills-title {
    font-family: 'Righteous', cursive;
    font-size: 1rem;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.skills-subtitle {
    font-size: 0.75rem;
    color: var(--text-dim);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
}

.skill-card {
    background: rgba(30, 30, 45, 0.6);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    padding: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.skill-card:hover {
    border-color: rgba(255,123,84,0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.skill-card.selected {
    border-color: var(--psych-orange);
    background: rgba(255,123,84,0.1);
    box-shadow: 0 0 20px rgba(255,123,84,0.2);
}

.skill-card.selected::after {
    content: '✓';
    position: absolute;
    top: 6px;
    right: 8px;
    font-size: 0.8rem;
    color: var(--psych-orange);
}

.skill-emoji {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.skill-name {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-main);
    margin-bottom: 0.25rem;
}

.skill-desc {
    font-size: 0.7rem;
    color: var(--text-dim);
    line-height: 1.4;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 0.5rem;
}

.skill-tag {
    font-size: 0.6rem;
    padding: 2px 6px;
    border-radius: 8px;
    background: rgba(97,218,251,0.15);
    color: var(--psych-cyan);
}

.skill-generates {
    font-size: 0.65rem;
    color: var(--psych-pink);
    margin-top: 0.5rem;
    font-style: italic;
}

.skills-loading {
    text-align: center;
    padding: 1rem;
    color: var(--text-dim);
}

/* Hierarchical Sub-Stems (nested under parent) */
.stem-card.has-substems {
    position: relative;
}

.substems-toggle {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255,123,84,0.2);
    border: 1px solid rgba(255,123,84,0.4);
    color: var(--psych-orange);
    font-size: 0.65rem;
    padding: 3px 8px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.substems-toggle:hover {
    background: rgba(255,123,84,0.3);
}

.substems-toggle.expanded {
    background: var(--psych-orange);
    color: #1a1a24;
}

.substems-container {
    display: none;
    grid-column: 1 / -1;
    background: rgba(20, 20, 30, 0.5);
    border-radius: 12px;
    padding: 0.75rem;
    margin: -0.5rem 0 0.5rem 0;
    border: 1px solid rgba(255,123,84,0.2);
}

.substems-container.expanded {
    display: block;
}

.substems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0.5rem;
}

.substem-mini-card {
    background: rgba(30, 30, 45, 0.8);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    padding: 0.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.substem-mini-card:hover {
    border-color: rgba(255,123,84,0.4);
    transform: translateY(-2px);
}

.substem-mini-card.muted {
    opacity: 0.4;
}

.substem-mini-card .emoji {
    font-size: 1.2rem;
}

.substem-mini-card .name {
    font-size: 0.65rem;
    color: var(--text-main);
    margin-top: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.substem-mini-card .mini-controls {
    display: flex;
    gap: 4px;
    justify-content: center;
    margin-top: 0.4rem;
}

.substem-mini-card .mini-btn {
    font-size: 0.55rem;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(40, 40, 60, 0.8);
    color: var(--text-dim);
    cursor: pointer;
}

.substem-mini-card .mini-btn:hover {
    background: rgba(60, 60, 80, 0.8);
}

.substem-mini-card .mini-btn.active {
    background: var(--psych-orange);
    color: #1a1a24;
    border-color: var(--psych-orange);
}

.substem-parent-label {
    font-size: 0.7rem;
    color: var(--text-dim);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.substem-parent-label::before {
    content: '↳';
    color: var(--psych-orange);
}

/* URL Input */
.url-section {
    display: none;
}

.url-section.active {
    display: block;
}

.url-input-wrapper {
    position: relative;
}

.url-input {
    width: 100%;
    padding: 1.25rem 1.5rem;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    background: rgba(0,0,0,0.3);
    border: 2px solid rgba(255,255,255,0.08);
    border-radius: 14px;
    color: var(--text);
    transition: all 0.3s;
}

.url-input:focus {
    outline: none;
    border-color: var(--psych-purple);
    box-shadow: 0 0 30px rgba(198, 120, 221, 0.15);
}

.url-input::placeholder {
    color: var(--text-dim);
}

/* Platform Pills */
.platforms {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1.25rem;
    flex-wrap: wrap;
}

.platform-pill {
    font-size: 0.75rem;
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 50px;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all 0.3s;
}

.platform-pill:hover {
    border-color: var(--psych-teal);
    color: var(--psych-teal);
}

.platform-pill.clickable {
    cursor: pointer;
}

.platform-pill.clickable:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 10px rgba(86, 182, 194, 0.2);
}

/* Archive.org Browse Section */
.archive-section {
    display: none;
}

.archive-section.active {
    display: block;
}

.archive-search-wrapper {
    position: relative;
    margin-bottom: 1rem;
}

.archive-search {
    width: 100%;
    padding: 1.25rem 1.5rem;
    padding-right: 3rem;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1rem;
    background: rgba(0,0,0,0.3);
    border: 2px solid rgba(86, 182, 194, 0.15);
    border-radius: 14px;
    color: var(--text);
    transition: all 0.3s;
}

.archive-search:focus {
    outline: none;
    border-color: var(--psych-teal);
    box-shadow: 0 0 30px rgba(86, 182, 194, 0.15);
}

.archive-search::placeholder {
    color: var(--text-dim);
}

.archive-search-btn {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: var(--psych-teal);
    border: none;
    border-radius: 8px;
    color: white;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.3s;
}

.archive-search-btn:hover {
    background: #4da6b3;
}

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

.archive-filters {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.archive-filter {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.8rem;
    padding: 0.4rem 0.75rem;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    color: var(--text-dim);
    cursor: pointer;
    transition: all 0.3s;
}

.archive-filter:hover,
.archive-filter.active {
    border-color: var(--psych-teal);
    color: var(--psych-teal);
}

.archive-year-input {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.8rem;
    padding: 0.4rem 0.75rem;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    color: var(--text);
    width: 70px;
    text-align: center;
}

.archive-year-input::placeholder {
    color: var(--text-dim);
}

.archive-results {
    max-height: 400px;
    overflow-y: auto;
    margin-top: 1rem;
}

.archive-results::-webkit-scrollbar {
    width: 6px;
}

.archive-results::-webkit-scrollbar-track {
    background: transparent;
}

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

.archive-show-card {
    padding: 1rem;
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 10px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.3s;
}

.archive-show-card:hover {
    border-color: var(--psych-teal);
    background: rgba(86, 182, 194, 0.05);
}

.archive-show-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text);
    margin-bottom: 0.25rem;
}

.archive-show-meta {
    font-size: 0.75rem;
    color: var(--text-dim);
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.archive-show-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.archive-show-rating {
    color: var(--psych-yellow);
}

/* Track list (inside a show detail view) */
.archive-tracks {
    display: none;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.archive-tracks.active {
    display: block;
}

.archive-track-row {
    display: flex;
    align-items: center;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    transition: all 0.2s;
    gap: 0.75rem;
}

.archive-track-row:hover {
    background: rgba(86, 182, 194, 0.08);
}

.archive-track-num {
    font-size: 0.7rem;
    color: var(--text-dim);
    width: 24px;
    text-align: right;
    flex-shrink: 0;
}

.archive-track-title {
    flex: 1;
    font-size: 0.85rem;
    color: var(--text);
}

.archive-track-btn {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.7rem;
    padding: 0.3rem 0.75rem;
    background: rgba(86, 182, 194, 0.15);
    border: 1px solid rgba(86, 182, 194, 0.3);
    border-radius: 6px;
    color: var(--psych-teal);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.archive-track-btn:hover {
    background: var(--psych-teal);
    color: white;
}

.archive-process-all-btn {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    padding: 0.6rem 1.25rem;
    background: linear-gradient(135deg, var(--psych-teal), var(--psych-blue));
    border: none;
    border-radius: 8px;
    color: white;
    cursor: pointer;
    margin-top: 0.75rem;
    transition: all 0.3s;
    width: 100%;
}

.archive-process-all-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(86, 182, 194, 0.3);
}

.archive-back-btn {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.8rem;
    padding: 0.4rem 0.75rem;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    color: var(--text-dim);
    cursor: pointer;
    margin-bottom: 0.75rem;
    transition: all 0.2s;
}

.archive-back-btn:hover {
    border-color: var(--text);
    color: var(--text);
}

.archive-loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-dim);
    font-size: 0.9rem;
}

.archive-empty {
    text-align: center;
    padding: 2rem;
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* Submit Button */
.submit-btn {
    font-family: 'Righteous', cursive;
    font-size: 1.2rem;
    letter-spacing: 1px;
    padding: 1.25rem 3rem;
    background: linear-gradient(135deg, var(--psych-orange) 0%, var(--psych-pink) 50%, var(--psych-purple) 100%);
    background-size: 200% 200%;
    border: none;
    border-radius: 14px;
    color: white;
    cursor: pointer;
    margin-top: 2rem;
    transition: all 0.4s;
    box-shadow: 0 8px 30px rgba(255, 107, 157, 0.25);
    animation: gradient-shift 5s ease infinite;
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 40px rgba(255, 107, 157, 0.35);
}

.submit-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}