/* ═══════════════════════════════════════════════════════════
   STEAM Bridge — Modal Overlay
   ═══════════════════════════════════════════════════════════ */

.steam-overlay {
    position: fixed;
    inset: 0;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.19, 1, 0.22, 1);
}

.steam-overlay.show {
    opacity: 1;
    pointer-events: auto;
}

.steam-modal {
    width: min(860px, 95vw);
    max-height: 90vh;
    overflow-y: auto;
    background: linear-gradient(145deg, #0f172a 0%, #1e293b 60%, #0f172a 100%);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 24px;
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.6),
                0 0 0 1px rgba(255,255,255,0.04),
                inset 0 1px 0 rgba(255,255,255,0.06);
    transform: scale(0.92) translateY(16px);
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
}

.steam-overlay.show .steam-modal {
    transform: scale(1) translateY(0);
}

/* ── Header ── */
.steam-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.steam-header-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

/* Animated STEAM letter ring */
.steam-logo-ring {
    display: flex;
    gap: 2px;
    padding: 6px 10px;
    background: linear-gradient(135deg, rgba(99,102,241,0.2), rgba(139,92,246,0.2));
    border: 1px solid rgba(99,102,241,0.4);
    border-radius: 12px;
}

.steam-letter {
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 1px;
    font-family: 'Outfit', system-ui, sans-serif;
    animation: steamPulse 3s ease-in-out infinite;
}
.steam-letter.s  { color: #10b981; animation-delay: 0s; }
.steam-letter.t  { color: #3b82f6; animation-delay: 0.2s; }
.steam-letter.e  { color: #f59e0b; animation-delay: 0.4s; }
.steam-letter.a  { color: #ec4899; animation-delay: 0.6s; }
.steam-letter.m  { color: #8b5cf6; animation-delay: 0.8s; }

@keyframes steamPulse {
    0%, 100% { opacity: 1; transform: translateY(0); }
    50% { opacity: 0.7; transform: translateY(-2px); }
}

.steam-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #f1f5f9;
    font-family: 'Outfit', system-ui, sans-serif;
}

.steam-subtitle {
    font-size: 0.72rem;
    color: #64748b;
    margin-top: 2px;
}

.steam-close-btn {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.04);
    color: #64748b;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: all 0.2s;
}
.steam-close-btn:hover {
    background: rgba(239,68,68,0.15);
    border-color: rgba(239,68,68,0.4);
    color: #ef4444;
    transform: scale(1.1);
}

/* ── Subject row ── */
.steam-subject-row {
    padding: 16px 24px 8px;
}

.steam-subject-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #94a3b8;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.steam-topic-input {
    width: 100%;
    box-sizing: border-box;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(99,102,241,0.3);
    border-radius: 12px;
    padding: 12px 16px;
    color: #f1f5f9;
    font-size: 0.95rem;
    font-family: 'Inter', 'Outfit', system-ui, sans-serif;
    outline: none;
    transition: all 0.2s;
}
.steam-topic-input::placeholder { color: #475569; }
.steam-topic-input:focus {
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99,102,241,0.12);
    background: rgba(99,102,241,0.08);
}

/* ── Subject Chips ── */
.steam-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 24px;
}

.steam-chip {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 5px 11px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.04);
    color: #94a3b8;
    font-size: 0.72rem;
    font-weight: 600;
    font-family: 'Inter', system-ui, sans-serif;
    cursor: pointer;
    transition: all 0.18s;
    -webkit-tap-highlight-color: transparent;
}
.steam-chip:hover {
    background: rgba(99,102,241,0.18);
    border-color: rgba(99,102,241,0.5);
    color: #c7d2fe;
    transform: translateY(-1px);
}
.steam-chip.active {
    background: linear-gradient(135deg, rgba(99,102,241,0.3), rgba(139,92,246,0.3));
    border-color: #6366f1;
    color: #a5b4fc;
}

/* ── Detect Row ── */
.steam-detect-row {
    padding: 4px 24px 12px;
}

.steam-detect-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    border-radius: 10px;
    border: 1px dashed rgba(99,102,241,0.4);
    background: rgba(99,102,241,0.06);
    color: #818cf8;
    font-size: 0.78rem;
    font-weight: 600;
    font-family: 'Inter', system-ui, sans-serif;
    cursor: pointer;
    transition: all 0.2s;
}
.steam-detect-btn:hover {
    background: rgba(99,102,241,0.14);
    border-color: #6366f1;
    color: #a5b4fc;
    transform: translateY(-1px);
}
.steam-detect-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ── Generate Button ── */
.steam-generate-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: calc(100% - 48px);
    margin: 0 24px 16px;
    padding: 14px;
    border-radius: 14px;
    border: none;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: white;
    font-size: 0.95rem;
    font-weight: 700;
    font-family: 'Outfit', system-ui, sans-serif;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.19, 1, 0.22, 1);
    box-shadow: 0 6px 20px rgba(79,70,229,0.35);
    letter-spacing: 0.02em;
}
.steam-generate-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(79,70,229,0.5);
    background: linear-gradient(135deg, #4338ca, #6d28d9);
}
.steam-generate-btn:active:not(:disabled) { transform: translateY(0); }
.steam-generate-btn:disabled {
    background: rgba(99,102,241,0.15);
    color: #475569;
    cursor: not-allowed;
    box-shadow: none;
}

/* ── Loading ── */
.steam-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 32px 24px;
}

.steam-loading-ring {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 3px solid rgba(99,102,241,0.15);
    border-top-color: #6366f1;
    border-right-color: #8b5cf6;
    animation: steamSpin 0.9s linear infinite;
}

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

.steam-loading-text {
    font-size: 0.85rem;
    color: #64748b;
    font-family: 'Inter', system-ui, sans-serif;
}

/* ── Results ── */
.steam-results {
    padding: 0 24px 24px;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}
.steam-results.visible {
    opacity: 1;
    transform: translateY(0);
}

.steam-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
    gap: 12px;
    flex-wrap: wrap;
}

.steam-results-title {
    font-size: 0.85rem;
    color: #94a3b8;
    font-family: 'Inter', system-ui, sans-serif;
    display: flex;
    align-items: center;
    gap: 7px;
}
.steam-results-title strong { color: #e2e8f0; }

.steam-add-canvas-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 16px;
    border-radius: 10px;
    border: 1px solid rgba(16,185,129,0.4);
    background: rgba(16,185,129,0.1);
    color: #34d399;
    font-size: 0.78rem;
    font-weight: 700;
    font-family: 'Inter', system-ui, sans-serif;
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}
.steam-add-canvas-btn:hover {
    background: rgba(16,185,129,0.2);
    border-color: #10b981;
    color: #6ee7b7;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(16,185,129,0.25);
}
.steam-add-canvas-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ── Result Cards Grid ── */
.steam-cards-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
}

@media (max-width: 700px) {
    .steam-cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 440px) {
    .steam-cards-grid { grid-template-columns: 1fr; }
}

.steam-result-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid color-mix(in srgb, var(--card-color) 30%, transparent);
    border-radius: 14px;
    padding: 14px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transform: translateY(12px) scale(0.96);
    animation: steamCardIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}
.steam-result-card:hover {
    border-color: var(--card-color);
    box-shadow: 0 0 20px color-mix(in srgb, var(--card-color) 20%, transparent);
    transform: translateY(-2px) scale(1.01);
}

@keyframes steamCardIn {
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.steam-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 2px;
}

.steam-card-icon {
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: color-mix(in srgb, var(--card-color) 20%, transparent);
    border: 1px solid color-mix(in srgb, var(--card-color) 40%, transparent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: var(--card-color);
    flex-shrink: 0;
}

.steam-card-domain {
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--card-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-family: 'Outfit', system-ui, sans-serif;
}

.steam-card-connection {
    font-size: 0.76rem;
    color: #cbd5e1;
    line-height: 1.55;
    font-family: 'Inter', system-ui, sans-serif;
    flex: 1;
}

.steam-card-activity {
    background: color-mix(in srgb, var(--card-color) 12%, transparent);
    border-radius: 8px;
    padding: 7px 9px;
    font-size: 0.68rem;
    color: color-mix(in srgb, var(--card-color) 90%, white);
    line-height: 1.4;
    font-family: 'Inter', system-ui, sans-serif;
    display: flex;
    gap: 5px;
}
.steam-card-activity i { flex-shrink: 0; margin-top: 1px; }

.steam-card-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 2px;
}

.steam-kw {
    font-size: 0.62rem;
    padding: 2px 7px;
    border-radius: 10px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    color: #64748b;
    font-family: 'Inter', system-ui, sans-serif;
}

/* ── Card Action Buttons ── */
.steam-card-actions {
    display: flex;
    gap: 6px;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.06);
}
.steam-card-action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 7px;
    border-radius: 8px;
    border: none;
    background: rgba(255,255,255,0.05);
    color: #94a3b8;
    font-size: 0.65rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: 'Inter', system-ui, sans-serif;
}
.steam-card-action-btn:hover:not(:disabled) {
    background: color-mix(in srgb, var(--card-color) 20%, transparent);
    color: var(--card-color);
}
.steam-card-action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ── STEAM button in AI floating toolbar ── */
.ai-float-btn[data-action="steam"] {
    color: #8b5cf6;
}
.ai-float-btn[data-action="steam"]:hover {
    background: linear-gradient(135deg, #7c3aed, #4f46e5);
    color: #fff;
}

/* ═══════════════════════════════════════════════════════════
   STEAM Bridge — Tab System
   ═══════════════════════════════════════════════════════════ */

.steam-header-tabs {
    display: flex;
    gap: 2px;
}

.steam-tab {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px 8px 12px;
    border: none;
    border-radius: 12px;
    background: transparent;
    color: #64748b;
    font-size: 0.8rem;
    font-weight: 600;
    font-family: 'Outfit', 'Inter', system-ui, sans-serif;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.01em;
}

.steam-tab:hover {
    background: rgba(255,255,255,0.05);
}

.steam-tab.active {
    background: rgba(99,102,241,0.12);
    color: #a5b4fc;
}

.steam-tab .steam-logo-ring {
    transform: scale(0.85);
    pointer-events: none;
}

.steam-tab .steam-title {
    font-size: 0.95rem;
}

.steam-tab .steam-subtitle {
    font-size: 0.68rem;
}

/* ═══════════════════════════════════════════════════════════
   STEAM Bridge — Activity Suggestions Tab
   ═══════════════════════════════════════════════════════════ */

.steam-activity-desc {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 14px 24px 8px;
    font-size: 0.78rem;
    color: #64748b;
    line-height: 1.5;
    font-family: 'Inter', system-ui, sans-serif;
}

.steam-activity-desc i {
    color: #6366f1;
    margin-top: 3px;
    flex-shrink: 0;
}

.steam-suggest-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: calc(100% - 48px);
    margin: 10px 24px 16px;
    padding: 14px;
    border-radius: 14px;
    border: none;
    background: linear-gradient(135deg, #059669, #10b981);
    color: white;
    font-size: 0.95rem;
    font-weight: 700;
    font-family: 'Outfit', system-ui, sans-serif;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.19, 1, 0.22, 1);
    box-shadow: 0 6px 20px rgba(5,150,105,0.35);
    letter-spacing: 0.02em;
}

.steam-suggest-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(5,150,105,0.5);
    background: linear-gradient(135deg, #047857, #059669);
}

.steam-suggest-btn:active:not(:disabled) { transform: translateY(0); }

.steam-suggest-btn:disabled {
    background: rgba(16,185,129,0.15);
    color: #475569;
    cursor: not-allowed;
    box-shadow: none;
}

/* ── Activity Results ── */

.steam-activity-results {
    padding: 0 24px 24px;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1);
}

.steam-activity-results.visible {
    opacity: 1;
    transform: translateY(0);
}

.steam-act-header {
    font-size: 0.85rem;
    color: #94a3b8;
    font-family: 'Inter', system-ui, sans-serif;
    display: flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 14px;
}

.steam-act-header strong { color: #e2e8f0; }

.steam-act-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

@media (max-width: 660px) {
    .steam-act-grid { grid-template-columns: 1fr; }
}

/* ── Activity Card ── */

.steam-act-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid color-mix(in srgb, var(--act-color) 25%, transparent);
    border-radius: 16px;
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
    opacity: 0;
    transform: translateY(12px) scale(0.96);
    animation: steamActCardIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.steam-act-card:nth-child(2) { animation-delay: 0.1s; }

@keyframes steamActCardIn {
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.steam-act-card:hover {
    border-color: var(--act-color);
    box-shadow: 0 0 24px color-mix(in srgb, var(--act-color) 18%, transparent);
    transform: translateY(-2px) scale(1.01);
}

.steam-act-card-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.steam-act-badge-tag {
    font-size: 0.6rem;
    font-weight: 700;
    padding: 3px 9px;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-family: 'Outfit', system-ui, sans-serif;
}

.steam-act-badge-tag.tech {
    background: rgba(99,102,241,0.15);
    color: #818cf8;
    border: 1px solid rgba(99,102,241,0.3);
}

.steam-act-badge-tag.offline-badge {
    background: rgba(16,185,129,0.15);
    color: #34d399;
    border: 1px solid rgba(16,185,129,0.3);
}

.steam-act-badge-type {
    font-size: 0.6rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 5px;
    background: rgba(255,255,255,0.05);
    color: var(--act-color);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: 'Inter', system-ui, sans-serif;
}

.steam-act-card-title {
    font-size: 0.92rem;
    font-weight: 800;
    color: #f1f5f9;
    font-family: 'Outfit', system-ui, sans-serif;
    line-height: 1.3;
}

.steam-act-card-desc {
    font-size: 0.78rem;
    color: #94a3b8;
    line-height: 1.5;
    font-family: 'Inter', system-ui, sans-serif;
}

.steam-act-card-materials,
.steam-act-card-steps {
    font-size: 0.73rem;
    color: #cbd5e1;
    line-height: 1.5;
    font-family: 'Inter', system-ui, sans-serif;
}

.steam-act-card-materials i,
.steam-act-card-steps i {
    color: var(--act-color);
    width: 16px;
}

.steam-act-card-steps {
    background: rgba(255,255,255,0.03);
    border-radius: 8px;
    padding: 8px 10px;
}

.steam-act-card-why {
    font-size: 0.7rem;
    color: color-mix(in srgb, var(--act-color) 80%, white);
    font-style: italic;
    font-family: 'Inter', system-ui, sans-serif;
    display: flex;
    gap: 5px;
    align-items: flex-start;
}

.steam-act-card-why i {
    margin-top: 2px;
    flex-shrink: 0;
}

.steam-act-card-actions {
    margin-top: 4px;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.steam-act-create-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    width: 100%;
    padding: 10px;
    border-radius: 10px;
    border: none;
    background: linear-gradient(135deg, color-mix(in srgb, var(--act-color) 90%, black), var(--act-color));
    color: white;
    font-size: 0.8rem;
    font-weight: 700;
    font-family: 'Outfit', system-ui, sans-serif;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 4px 14px color-mix(in srgb, var(--act-color) 30%, transparent);
}

.steam-act-create-btn:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px color-mix(in srgb, var(--act-color) 45%, transparent);
}

.steam-act-create-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ── STEAM trigger button in top-left UI ── */
#btn-steam-bridge {
    position: relative;
}
#btn-steam-bridge i {
    background: linear-gradient(135deg, #10b981, #3b82f6, #f59e0b, #ec4899, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ── Touch devices ── */
@media (pointer: coarse) {
    .steam-chip { min-height: 40px; padding: 8px 14px; font-size: 0.78rem; }
    .steam-generate-btn { padding: 16px; font-size: 1rem; }
    .steam-topic-input { padding: 14px 16px; font-size: 1rem; }
    .steam-close-btn { width: 42px; height: 42px; }
    .steam-suggest-btn { padding: 16px; font-size: 1rem; }
    .steam-tab { padding: 12px 14px; }
    .steam-act-create-btn { padding: 12px; font-size: 0.85rem; }
}

/* ── Dark mode already (dark bg) — add light mode safety ── */
@media (prefers-color-scheme: light) {
    .steam-modal {
        background: linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
    }
}