/* ---------- Splash ---------- */

.splash {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    background: var(--md-background);
    color: var(--md-on-background);
}
.splash-logo {
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--md-primary);
}
.splash-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid color-mix(in srgb, var(--md-primary) 30%, transparent);
    border-top-color: var(--md-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

.center-pad {
    padding: 48px 24px;
    display: flex;
    justify-content: center;
}

/* ---------- Section titles (used in Settings & forms) ---------- */

.section-title {
    padding: 16px 16px 4px;
    color: var(--md-on-surface-variant);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ---------- Group selection ---------- */

.group-list {
    padding-bottom: 24px;
}
.group-card {
    display: flex;
    align-items: center;
    min-height: 56px;
}
.group-name {
    font-size: 15px;
    font-weight: 500;
}

/* ---------- Settings ---------- */

.settings-row {
    display: flex;
    align-items: center;
    gap: 12px;
}
.settings-row-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--md-primary);
}
.settings-row-text {
    flex: 1;
    min-width: 0;
}
.settings-row-title {
    font-size: 15px;
    color: var(--md-on-surface);
}
.settings-row-sub {
    font-size: 12px;
    color: var(--md-on-surface-variant);
    margin-top: 2px;
}
.settings-row-chev {
    color: var(--md-on-surface-variant);
    font-size: 22px;
    font-weight: 300;
    line-height: 1;
}
.settings-version {
    padding: 32px 16px 16px;
    text-align: center;
    color: var(--md-on-surface-variant);
    font-size: 12px;
}

.analytics-row {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}
.analytics-row .settings-row-text {
    flex: 1;
    min-width: 0;
}
.analytics-toggle {
    appearance: none;
    -webkit-appearance: none;
    width: 44px;
    height: 24px;
    border-radius: 12px;
    background: color-mix(in srgb, var(--md-on-surface) 18%, transparent);
    position: relative;
    cursor: pointer;
    transition: background 200ms;
    flex-shrink: 0;
    margin: 0;
}
.analytics-toggle::after {
    content: "";
    position: absolute;
    top: 2px; left: 2px;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: var(--md-surface);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    transition: transform 200ms;
}
.analytics-toggle:checked {
    background: var(--md-primary);
}
.analytics-toggle:checked::after {
    transform: translateX(20px);
}

/* ---------- Date tabs row (Schedule) ---------- */

.date-tabs-row {
    display: flex;
    gap: 6px;
    padding: 8px;
    background: var(--md-surface);
    position: sticky;
    top: 0;  /* topbar lives in a different scroll context (it's outside .screen-body), so tabs stick to the top of the scroll area */
    z-index: 5;
}
.date-tab {
    flex: 1;
    text-align: center;
    padding: 10px 8px;
    border-radius: 10px;
    background: var(--md-surface-variant);
    color: var(--md-on-surface-variant);
    font-size: 11px;
    font-weight: 400;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.date-tab.current {
    flex: 1.6;
    background: var(--md-primary);
    color: var(--md-on-primary);
    font-size: 13px;
    font-weight: 700;
}
.date-tab.today:not(.current) {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
    font-weight: 700;
}
.date-tab.sunday {
    color: var(--md-error);
}

/* ---------- Day page / pager ---------- */

.day-page-host {
    min-height: 60vh;
    padding-bottom: 24px;
}

.day-pager {
    width: 100%;
    overflow: hidden;
    touch-action: pan-y;       /* allow vertical scroll, capture horizontal */
    min-height: 60vh;
}
.day-pager-track {
    display: flex;
    width: 300%;
    transform: translateX(-33.3333%);
    transition: transform 280ms cubic-bezier(.2,.7,.2,1);
    will-change: transform;
}
.day-page-slot {
    flex: 0 0 33.3333%;
    width: 33.3333%;
    min-height: 60vh;
}

.status-page {
    padding: 96px 32px 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 8px;
}
.status-title {
    font-size: 22px;
    font-weight: 700;
}
.status-title.primary         { color: var(--md-primary); }
.status-title.error           { color: var(--md-error); }
.status-title.warning         { color: var(--md-tertiary); }
.status-title.secondary-color { color: var(--md-secondary); }
.status-title.tertiary-color  { color: var(--md-tertiary); }
.status-title.muted           { color: var(--md-on-surface-variant); }
.status-date {
    font-size: 15px;
    color: var(--md-on-surface-variant);
}
.status-subtitle {
    margin-top: 8px;
    color: var(--md-on-surface-variant);
    font-size: 14px;
    line-height: 1.5;
}

/* ---------- Lesson list & cards ---------- */

.lesson-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px 16px 24px;
    max-width: 600px;
    margin: 0 auto;
}

.lesson-card {
    background: var(--md-surface-variant);
    color: var(--md-on-surface);
    border-radius: 12px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: background 200ms;
}
.lesson-card.lesson-current {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
}
.lesson-card.lesson-past {
    opacity: 0.5;
    background: color-mix(in srgb, var(--md-surface-variant) 60%, transparent);
}

.lesson-time-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.lesson-time {
    font-size: 14px;
    font-weight: 700;
    color: var(--md-primary);
}
.lesson-card.lesson-current .lesson-time {
    color: var(--md-on-primary-container);
}
.lesson-time-hint {
    flex: 1;
    min-width: 0;
    font-size: 12px;
    font-weight: 500;
    color: var(--md-on-surface-variant);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.lesson-card.lesson-current .lesson-time-hint {
    color: var(--md-on-primary-container);
}
.lesson-room {
    padding: 2px 8px;
    border-radius: 6px;
    background: var(--md-secondary-container);
    color: var(--md-on-secondary-container);
    font-size: 12px;
    font-weight: 600;
}

.lesson-progress {
    height: 4px;
    border-radius: 2px;
    background: color-mix(in srgb, var(--md-on-surface) 15%, transparent);
    overflow: hidden;
    margin: 4px 0;
}
.lesson-card.lesson-current .lesson-progress {
    background: color-mix(in srgb, var(--md-on-primary-container) 20%, transparent);
}
.lesson-progress-fill {
    height: 100%;
    background: var(--md-primary);
    transition: width 500ms linear;
}
.lesson-card.lesson-current .lesson-progress-fill {
    background: var(--md-on-primary-container);
}

.lesson-subject {
    font-size: 15px;
    font-weight: 500;
    line-height: 1.3;
    margin-top: 4px;
}

.lesson-meta-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-top: 4px;
}
.lesson-chip {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: lowercase;
}
.lesson-chip-secondary {
    background: color-mix(in srgb, var(--md-secondary) 15%, transparent);
    color: var(--md-secondary);
}
.lesson-chip-primary {
    background: color-mix(in srgb, var(--md-primary) 15%, transparent);
    color: var(--md-primary);
}
.lesson-chip-tertiary {
    background: color-mix(in srgb, var(--md-tertiary) 15%, transparent);
    color: var(--md-tertiary);
}
.lesson-chip-muted {
    background: color-mix(in srgb, var(--md-on-surface) 10%, transparent);
    color: var(--md-on-surface-variant);
}

.lesson-freq {
    font-size: 12px;
    color: var(--md-on-surface-variant);
}

.lesson-teacher {
    font-size: 12px;
    color: var(--md-on-surface-variant);
    margin-top: 4px;
}

.lesson-gap {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    color: var(--md-on-surface-variant);
    font-size: 11px;
}
.lesson-gap::before,
.lesson-gap::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--md-outline-variant);
}

/* ---------- Banners on the main screen ---------- */

.banner {
    margin: 8px 12px;
    padding: 12px 14px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 13px;
    cursor: pointer;
}
.banner.banner-info {
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
}
.banner-text { flex: 1; }
.banner-action { font-weight: 700; }

.banner.year-banner {
    flex-direction: column;
    align-items: stretch;
    cursor: default;
    gap: 6px;
}
.banner-title {
    font-size: 13px;
    font-weight: 700;
}
.banner-message {
    font-size: 12px;
    line-height: 1.4;
    opacity: 0.95;
}
.banner-actions {
    display: flex;
    justify-content: flex-end;
    gap: 4px;
    margin-top: 4px;
}
.banner-btn {
    padding: 6px 14px !important;
    color: var(--md-on-primary-container) !important;
}
.banner-btn-primary { font-weight: 700; }

/* ---------- Exam-day page additions ---------- */

.exam-day-title {
    padding: 8px 4px 4px;
}
.exam-time {
    color: var(--md-error) !important;
}
.next-exam-card {
    margin: 20px auto 0;
    max-width: 320px;
    background: var(--md-primary-container);
    color: var(--md-on-primary-container);
    border-radius: 12px;
    padding: 14px 16px;
    cursor: pointer;
}
.next-exam-label {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    opacity: 0.85;
}
.next-exam-subject {
    margin-top: 4px;
    font-size: 14px;
    font-weight: 500;
}
.next-exam-when {
    margin-top: 4px;
    font-size: 12px;
    opacity: 0.85;
}