/* ========================================
   Shadowing App - Dashboard Styles
   ======================================== */

/* ---- Header ---- */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    height: var(--header-height);
    background: rgba(10, 10, 26, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 50;
}

.app-header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.app-header__logo-icon {
    width: 32px;
    height: 32px;
    background: var(--accent-gradient);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.app-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

/* ---- Login Page ---- */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-lg);
}

.login-card {
    width: 100%;
    max-width: 420px;
    padding: var(--space-2xl);
}

.login-card__logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.login-card__logo-icon {
    width: 64px;
    height: 64px;
    background: var(--accent-gradient);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    box-shadow: var(--shadow-glow);
}

.login-card__title {
    font-size: var(--font-size-2xl);
    text-align: center;
}

.login-card__subtitle {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    text-align: center;
}

.login-card__form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.login-card__toggle {
    text-align: center;
    margin-top: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.login-card__toggle a {
    cursor: pointer;
}

/* ---- Stats Bar ---- */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.stat-card {
    padding: var(--space-lg);
    text-align: center;
}

.stat-card__icon {
    font-size: 28px;
    margin-bottom: var(--space-sm);
}

.stat-card__value {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card__label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* ---- Course Progress ---- */
.course-progress {
    margin-bottom: var(--space-xl);
    padding: var(--space-lg);
}

.course-progress__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
}

.course-progress__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.course-progress__count {
    font-size: var(--font-size-sm);
    color: var(--text-accent);
}

/* ---- Lesson Grid ---- */
.lessons-section {
    margin-bottom: var(--space-2xl);
}

.lessons-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.lessons-section__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.lessons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-lg);
}

/* ---- Lesson Card ---- */
.lesson-card {
    overflow: hidden;
    padding: 0;
    cursor: pointer;
    position: relative;
}

.lesson-card.locked {
    opacity: 0.5;
    cursor: not-allowed;
}

.lesson-card.locked::after {
    content: '🔒';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 40px;
    z-index: 2;
}

.lesson-card.completed {
    border-color: rgba(0, 184, 148, 0.3);
}

.lesson-card__thumbnail {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.lesson-card__thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.lesson-card:hover .lesson-card__thumbnail img {
    transform: scale(1.05);
}

.lesson-card__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-sm) var(--space-md);
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.lesson-card__body {
    padding: var(--space-md) var(--space-lg) var(--space-lg);
}

.lesson-card__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.lesson-card__meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.lesson-card__progress {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.lesson-card__day-dots {
    display: flex;
    gap: 4px;
}

.lesson-card__day-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transition: all var(--transition-fast);
}

.lesson-card__day-dot.completed {
    background: var(--color-success);
}

.lesson-card__day-dot.current {
    background: var(--accent-primary);
    box-shadow: 0 0 8px var(--accent-glow);
}

.lesson-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-sm);
}

.lesson-card__score {
    font-size: var(--font-size-sm);
    font-weight: 600;
}

/* ---- Add Lesson Modal ---- */
.add-lesson-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.transcript-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    cursor: pointer;
}

.transcript-toggle input[type="checkbox"] {
    accent-color: var(--accent-primary);
}