/* Study session — hierarchy, step cards, state clarity, two-column layout */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

body.study-session-page {
    --ss-hero: clamp(2rem, 4.5vw, 2.65rem);
    --ss-title: clamp(1.35rem, 3vw, 1.55rem);
    --ss-section: 1.125rem;
    --ss-body: 0.875rem;
    --ss-label: 0.6875rem;
    --ss-muted: rgba(148, 163, 184, 0.95);
    --ss-accent: #3dd68c;
    --ss-surface: rgba(255, 255, 255, 0.04);
    --ss-border: rgba(61, 214, 140, 0.22);
}

/* —— Main grid: flow left, summary right —— */
.study-session-main {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
    grid-template-areas:
        "flow sidebar"
        "err err";
    gap: clamp(1rem, 3vw, 2rem);
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
    padding: clamp(0.75rem, 2vw, 1.25rem) clamp(1rem, 4vw, 1.5rem) clamp(2.5rem, 6vw, 4rem);
    box-sizing: border-box;
}

/* Body already uses global 56px + safe-area offset for fixed .top-nav (same as /app) */
body.study-session-page .study-session-main {
    padding-top: clamp(0.75rem, 2vw, 1.25rem);
}

.study-session-layout-inner {
    grid-area: flow;
    min-width: 0;
}

.study-session-sidebar {
    grid-area: sidebar;
    position: sticky;
    top: 0.75rem;
    align-self: start;
}

/* Below sticky page header on /study-session */
body.study-session-page .study-session-sidebar {
    top: calc(env(safe-area-inset-top, 0px) + var(--ss-header-sticky-offset, 5rem) + 0.35rem);
    max-height: calc(100vh - env(safe-area-inset-top, 0px) - var(--ss-header-sticky-offset, 5rem) - 1.5rem);
    overflow-y: auto;
}

.study-session-error {
    grid-area: err;
}

@media (max-width: 900px) {
    .study-session-main {
        grid-template-columns: 1fr;
        grid-template-areas:
            "sidebar"
            "flow"
            "err";
    }
}

/* —— Unboxed flow: no outer shell, no nested step cards —— */
/* Global `.container` (styles.css) adds border + radius — strip it here */
body.study-session-page #uploadFlowContainer.upload-flow-landing > .container {
    border: none !important;
    border-radius: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
    padding: 0 clamp(0.25rem, 2vw, 0.5rem) !important;
}

body.study-session-page #uploadFlowContainer.upload-flow-landing {
    margin-top: 0;
    padding: 0.25rem 0 2rem;
    border: none;
    border-radius: 0;
    box-shadow: none;
    background: transparent;
    overflow: visible;
}

body.study-session-page #uploadFlowContainer.upload-flow-landing::before,
body.study-session-page #uploadFlowContainer.upload-flow-landing::after {
    display: none;
}

body.study-session-page #uploadFlowContainer.upload-flow-landing .step-section {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    border-radius: 0 !important;
}

body.study-session-page #uploadFlowContainer.upload-flow-landing .upload-area {
    background: rgba(0, 0, 0, 0.15) !important;
    border: 1px dashed rgba(255, 255, 255, 0.14) !important;
    box-shadow: none !important;
    border-radius: 14px;
}

body.study-session-page #uploadFlowContainer.upload-flow-landing .upload-area:hover {
    border-color: rgba(61, 214, 140, 0.35) !important;
    background: rgba(61, 214, 140, 0.05) !important;
}

body.study-session-page #uploadFlowContainer.upload-flow-landing .mode-toggle-btn.active {
    box-shadow: none;
}

/* —— Hero —— */
#uploadFlowContainer.upload-flow-landing .home-header {
    margin-bottom: 1.75rem;
}

#uploadFlowContainer.upload-flow-landing .home-title {
    font-size: var(--ss-hero);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.12;
}

#uploadFlowContainer.upload-flow-landing .home-subtitle {
    font-size: var(--ss-body);
    color: var(--ss-muted);
    margin-top: 0.35rem;
}

/* After activity is chosen: single-column stack — no duplicate 2/3 rail */
#uploadFlowContainer.upload-flow--step1-collapsed .steps-flow {
    display: none;
}

/* One focal column: no hero + activity + capture triple stack */
#uploadFlowContainer.upload-flow--step1-collapsed.upload-flow-landing .home-header {
    display: none;
}

/* —— Vertical timeline (replaces flat step row) —— */
.study-session-page .steps-flow {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin-bottom: 2rem;
    max-width: 100%;
}

.study-session-page .step-indicator {
    flex-direction: row;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 0;
    border-radius: 0;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    background: transparent;
    margin-bottom: 0;
}

.study-session-page .step-indicator.active {
    border-bottom-color: rgba(61, 214, 140, 0.35);
    box-shadow: none;
    transition: border-color 0.2s ease;
}

.study-session-page .step-indicator.completed {
    opacity: 0.85;
}

.study-session-page .step-connector {
    display: none;
}

.study-session-page .step-label {
    font-size: var(--ss-body);
    text-align: left;
    max-width: none;
}

/* —— Step cards —— */
.study-session-page .step-section.step-card {
    border-radius: 0;
    padding: clamp(0.75rem, 2vw, 1.25rem) 0;
    margin-bottom: 1rem;
    transition: padding 0.2s ease, margin 0.2s ease;
}

#uploadFlowContainer.upload-flow--step1-collapsed #step2Section.step-card {
    padding-top: clamp(1rem, 2.5vw, 1.35rem);
}

#uploadFlowContainer.upload-flow--step1-collapsed #step2Section .step-card__head {
    margin-bottom: 1rem;
}

/* Collapsed Step 1 — one line: activity · Change → then capture card */
#step1Section .step1-compact {
    display: none;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    width: 100%;
}

#step1Section.step1--done {
    padding: 0.4rem 0 !important;
    margin-bottom: 0.35rem !important;
    background: transparent !important;
    border: none !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
    border-radius: 0 !important;
    box-shadow: none !important;
}

#step1Section.step1--done .step1-expanded {
    display: none !important;
}

#step1Section.step1--done .step1-compact {
    display: flex;
}

.step1-compact__line {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--ss-muted);
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
}

.step1-compact__sep {
    color: rgba(148, 163, 184, 0.5);
    font-weight: 600;
    user-select: none;
}

.step1-compact__change {
    flex-shrink: 0;
    padding: 0.25rem 0.6rem;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ss-accent);
    background: transparent;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: color 0.15s ease, background 0.15s ease;
}

.step1-compact__change:hover {
    color: #e2e8f0;
    background: rgba(61, 214, 140, 0.1);
}

body.study-session-page #step2Section {
    scroll-margin-top: 5rem;
}

.study-session-page .step-card__head {
    margin-bottom: 1.25rem;
}

.study-session-page .step-card__kicker {
    display: inline-block;
    font-size: var(--ss-label);
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ss-accent);
    margin-bottom: 0.35rem;
}

.study-session-page .step-card__title {
    font-size: var(--ss-title);
    font-weight: 800;
    color: #f0f4f8;
    margin: 0 0 0.35rem;
    line-height: 1.2;
}

.study-session-page .step-card__desc {
    font-size: var(--ss-body);
    color: var(--ss-muted);
    margin: 0;
    line-height: 1.45;
    max-width: 42rem;
}

.study-session-page .step-header .step-badge {
    display: none;
}

.study-session-page .step-header .step-title {
    display: none;
}

/* —— Activity pills —— */
.study-session-page .activity-grid {
    grid-template-columns: repeat(auto-fill, minmax(118px, 1fr));
    gap: 0.65rem;
}

.study-session-page .activity-btn {
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition:
        transform 0.18s ease,
        box-shadow 0.18s ease,
        border-color 0.18s ease;
}

.study-session-page .activity-btn:hover {
    transform: translateY(-2px) scale(1.02);
    border-color: rgba(61, 214, 140, 0.45);
}

.study-session-page .activity-btn.activity-btn--selected {
    border-color: rgba(61, 214, 140, 0.85);
    box-shadow:
        0 0 0 1px rgba(61, 214, 140, 0.35),
        0 0 28px rgba(61, 214, 140, 0.25);
    background: rgba(61, 214, 140, 0.12);
}

.study-session-page .activity-name {
    font-size: 0.82rem;
}

/* —— Step 2 state: one primary action group —— */
#step2Section[data-step2-state='upload-ready'] .upload-mode-toggle,
#step2Section[data-step2-state='upload-ready'] .upload-area {
    display: none !important;
}

#step2Section[data-step2-state='monitor-live'] .upload-mode-toggle,
#step2Section[data-step2-state='monitor-live'] #uploadModeContainer,
#step2Section[data-step2-state='monitor-save'] .upload-mode-toggle {
    display: none !important;
}

#step2Section[data-step2-state='monitor-live'] #monitorModeContainer,
#step2Section[data-step2-state='monitor-save'] #monitorModeContainer {
    display: block !important;
}

#step2Section[data-step2-state='monitor-setup'] #uploadModeContainer {
    display: none !important;
}

#step2Section[data-step2-state='monitor-setup'] #monitorModeContainer {
    display: block !important;
}

/* —— Mode toggle —— */
.study-session-page .upload-mode-toggle {
    margin-bottom: 1rem;
    padding: 0;
    border-radius: 0;
    background: transparent;
    border: none;
    gap: 0.65rem;
}

.study-session-page .mode-toggle-btn {
    flex: 1;
    justify-content: center;
    border-radius: 10px;
    font-size: 0.88rem;
}

/* —— Monitor dashboard —— */
.study-session-page .monitor-dashboard {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.study-session-page .monitor-dashboard-top {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem 1.1rem;
    border-radius: 16px;
    background: rgba(0, 0, 0, 0.45);
    border: 1px solid rgba(61, 214, 140, 0.2);
}

.study-session-page .monitor-dashboard-top .monitor-preview-container {
    width: 100%;
    max-width: 100%;
}

.study-session-page .monitor-dashboard-top-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem 1rem;
}

.study-session-page .monitor-rec-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #64748b;
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
    transition: background 0.2s ease;
}

#step2Section[data-step2-state='monitor-live'] .monitor-rec-dot {
    background: #ef4444;
    animation: ss-rec-pulse 1.2s ease-in-out infinite;
}

@keyframes ss-rec-pulse {
    50% {
        box-shadow: 0 0 0 8px rgba(239, 68, 68, 0.25);
    }
}

.study-session-page .monitor-dashboard-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--ss-label);
    color: var(--ss-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
}

.study-session-page .monitor-pomodoro-countdown {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.15rem;
}

.study-session-page .monitor-pomodoro-time {
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    color: #f8fafc;
}

.study-session-page .monitor-score-hero-wrap {
    text-align: right;
}

.study-session-page .monitor-score-hero-label {
    font-size: var(--ss-label);
    color: var(--ss-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.study-session-page #monitorScore.monitor-score-hero {
    font-size: clamp(2rem, 5vw, 2.75rem);
    line-height: 1;
    margin: 0.15rem 0 0;
    color: var(--ss-accent);
    text-shadow: 0 0 32px rgba(61, 214, 140, 0.35);
}

.study-session-page .monitor-dashboard-bars {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.study-session-page .md-row {
    display: grid;
    grid-template-columns: 88px 1fr 36px;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
}

.study-session-page .md-row > span:first-child {
    color: var(--ss-muted);
    font-weight: 600;
}

.study-session-page .md-num {
    text-align: right;
    font-variant-numeric: tabular-nums;
    font-weight: 700;
    color: #e2e8f0;
}

.study-session-page .md-bar {
    height: 8px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
}

.study-session-page .md-fill {
    height: 100%;
    width: 0%;
    border-radius: 6px;
    background: linear-gradient(90deg, #2eb574, var(--ss-accent));
    transition: width 0.35s ease;
}

.study-session-page .monitor-controls {
    margin-top: 0.5rem;
}

.study-session-page .monitor-btn.start-btn {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    font-size: 1.05rem;
}

.study-session-page .monitor-btn.stop-btn {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
}

/* Hide noise on study session */
body.study-session-page #monitorFrameDescriptions {
    display: none !important;
}

/* —— Change video —— */
.study-session-page .change-video-btn {
    margin-top: 0.75rem;
    padding: 0.45rem 0.9rem;
    font-size: var(--ss-label);
    font-weight: 700;
    color: var(--ss-muted);
    background: transparent;
    border: 1px solid rgba(61, 214, 140, 0.35);
    border-radius: 10px;
    cursor: pointer;
    transition:
        border-color 0.15s ease,
        color 0.15s ease;
}

.study-session-page .change-video-btn:hover {
    border-color: rgba(61, 214, 140, 0.6);
    color: #e2e8f0;
}

/* —— Upload feedback strip —— */
.study-session-page .upload-feedback {
    margin-top: 1rem;
}

.study-session-page .upload-feedback-track {
    height: 8px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.08);
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.study-session-page .upload-feedback-fill {
    height: 100%;
    width: 40%;
    border-radius: 6px;
    background: linear-gradient(90deg, #2eb574, var(--ss-accent));
}

.study-session-page #uploading:not(.hidden) .upload-feedback-fill {
    animation: ss-upload-sweep 1.1s ease-in-out infinite;
}

@keyframes ss-upload-sweep {
    0% {
        transform: translateX(-30%);
        opacity: 0.65;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateX(220%);
        opacity: 0.65;
    }
}

.study-session-page #uploading .upload-status-text {
    font-size: var(--ss-body);
    color: var(--ss-muted);
}

/* —— Results reward block —— */
body.study-session-page .results-hero {
    text-align: center;
    margin-bottom: 1.25rem;
}

body.study-session-page .results-hero-emoji {
    font-size: 2rem;
    display: block;
    margin-bottom: 0.35rem;
}

body.study-session-page .results-hero-title {
    font-size: var(--ss-section);
    font-weight: 800;
    color: #f8fafc;
    margin: 0 0 0.5rem;
}

body.study-session-page #results .score-display {
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

body.study-session-page #results .score-value {
    font-size: clamp(2.5rem, 7vw, 3.25rem);
}

/* —— Sidebar card —— */
.study-session-sidebar-card {
    border-radius: 0;
    border: none;
    background: transparent;
    padding: 0;
    margin-bottom: 0.75rem;
}

.study-session-sidebar-card--hint {
    border: none;
    background: transparent;
}

.study-session-sidebar-card h3 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    color: var(--ss-muted);
    margin: 0 0 0.35rem;
}

.study-session-sidebar-card .xp-sidebar-line {
    font-size: 0.8125rem;
    color: rgba(226, 232, 240, 0.85);
    margin: 0;
    line-height: 1.4;
}

.study-session-sidebar:has(#results:not(.hidden)) .study-session-sidebar-card--hint {
    display: none;
}

/* Header actions — match neon / dark palette (no peach sign-out) */
body.study-session-page .study-session-points .signout-btn {
    background: rgba(61, 214, 140, 0.12) !important;
    color: #ecfdf5 !important;
    border: 1px solid rgba(61, 214, 140, 0.45) !important;
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.03em;
}

body.study-session-page .study-session-points .signout-btn:hover {
    background: rgba(61, 214, 140, 0.22) !important;
    border-color: rgba(61, 214, 140, 0.7) !important;
    transform: translateY(-1px);
}

body.study-session-page .study-session-points .user-name {
    color: #e2e8f0;
    font-weight: 600;
    font-size: 0.9rem;
}