/* Layout skeleton only. All visual styling → public/themes/<classId>.css */

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

body { font-family: inherit; min-height: 100vh; }

/* ─── App shell ──────────────────────────────────────────────────────────── */
.app-wrapper    { display: flex; min-height: 100vh; }
.main-content   { flex: 1; min-width: 0; }
.container      { max-width: 100%; min-height: 100vh; }

/* ─── Sidebar ────────────────────────────────────────────────────────────── */
.sidebar        { width: 280px; position: sticky; top: 0; height: 100vh; overflow-y: auto; flex-shrink: 0; }
.sidebar-item   { cursor: pointer; }

/* ─── Header ─────────────────────────────────────────────────────────────── */
.header-content { display: flex; justify-content: space-between; align-items: center; max-width: 1200px; margin: 0 auto; }
.header-right   { display: flex; align-items: center; gap: 20px; }
.user-display   { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.user-buttons   { display: flex; gap: 6px; }
.logout-button  { cursor: pointer; font-family: inherit; }

/* ─── Progress ───────────────────────────────────────────────────────────── */
.progress-content   { max-width: 1200px; margin: 0 auto; }
.progress-bar-container { width: 100%; overflow: hidden; }
.progress-bar       { height: 100%; width: 0%; transition: width 0.5s ease; }

/* ─── Tasks ──────────────────────────────────────────────────────────────── */
.task-section       { max-width: 1200px; margin: 0 auto; }
.task-container     { display: grid; }
.task-card          { position: relative; overflow: hidden; }
.task-header        { display: flex; justify-content: space-between; align-items: center; }
.task-input-group   { display: flex; align-items: center; }
.task-input         { font-family: inherit; text-align: center; }
.task-button        { border: none; cursor: pointer; font-family: inherit; }
.task-question      { white-space: pre-line; }
.task-status        { min-height: 1.2em; }

/* ─── Confetti (JS-driven) ───────────────────────────────────────────────── */
.task-card.confetti-animation { animation: taskFadeOut 1.5s ease forwards; }

@keyframes taskFadeOut {
    0%   { opacity: 1; transform: scale(1); }
    100% { opacity: 0; transform: scale(0.96) translateY(-10px); }
}

.confetti {
    position: absolute;
    pointer-events: none;
    z-index: 1000;
    animation: confettiFall linear forwards;
}

@keyframes confettiFall {
    0%   { transform: translateY(0) translateX(0) rotate(0deg); opacity: 1; }
    100% { transform: translateY(380px) translateX(calc(var(--random-x, 0) * 100px)) rotate(720deg); opacity: 0; }
}

/* ─── Toast (JS-driven) ──────────────────────────────────────────────────── */
.message        { position: fixed; top: 20px; right: 20px; z-index: 9000; transform: translateX(440px); transition: transform 0.3s ease; }
.message.show   { transform: translateX(0); }

/* ─── Overlays ───────────────────────────────────────────────────────────── */
.auth-overlay         { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; z-index: 9999; }
.class-picker-overlay { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; z-index: 9998; padding: 20px; }

/* ─── Auth form ──────────────────────────────────────────────────────────── */
.auth-card      { width: 100%; max-width: 360px; }
.auth-tabs      { display: flex; }
.auth-tab       { background: none; border: none; cursor: pointer; font-family: inherit; }
.auth-input     { display: block; width: 100%; font-family: inherit; }
.auth-error     { min-height: 1.2em; }
.auth-button    { width: 100%; border: none; cursor: pointer; font-family: inherit; }
.reset-button   { width: 100%; display: block; cursor: pointer; font-family: inherit; }

/* ─── Class picker ───────────────────────────────────────────────────────── */
.class-picker-card  { width: 100%; max-width: 560px; }
.class-list         { display: grid; }
.class-card         { display: flex; align-items: center; cursor: pointer; }
.class-card-icon    { flex-shrink: 0; }
.class-card-info    { flex: 1; }

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .app-wrapper        { flex-direction: column; }
    .sidebar            { width: 100%; position: relative; height: auto; max-height: 280px; }
    .header-content     { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 600px) {
    .task-input-group   { flex-direction: column; align-items: stretch; }
    .task-input         { width: 100%; }
    .task-button        { width: 100%; }
}