/**
 * Lesson Rating Overlay CSS
 * Hiển thị form đánh giá bài học khi hoàn thành
 * Sử dụng --brand-color từ theme settings
 */

/* ========================================
   OVERLAY CONTAINER
======================================== */
.lesson-rating-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    border-radius: 12px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 12px;
    box-sizing: border-box;
}

.lesson-rating-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   RATING MODAL
======================================== */
.lesson-rating-modal {
    background: #fff;
    border-radius: 16px;
    padding: 32px 40px;
    max-width: 420px;
    width: 90%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
}

.lesson-rating-overlay.active .lesson-rating-modal {
    transform: scale(1) translateY(0);
}

/* Header */
.lesson-rating-modal .rating-header {
    margin-bottom: 24px;
}

.lesson-rating-modal .rating-header .icon-check {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.lesson-rating-modal .rating-header .icon-check i {
    font-size: 24px;
    color: #fff;
}

.lesson-rating-modal .rating-header h4 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 8px;
}

.lesson-rating-modal .rating-header p {
    font-size: 14px;
    color: #64748b;
    margin: 0;
}

.lesson-rating-modal .rating-header .rating-subtitle {
    font-size: 13px;
    color: #94a3b8;
    margin-top: 6px;
    font-style: italic;
}

/* ========================================
   STAR RATING
======================================== */
.lesson-rating-stars {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 20px;
}

.lesson-rating-stars .star {
    font-size: 32px;
    color: #e2e8f0;
    cursor: pointer;
    transition: color 0.2s ease, transform 0.2s ease;
    -webkit-user-select: none;
    user-select: none;
}

.lesson-rating-stars .star:hover {
    transform: scale(1.15);
}

.lesson-rating-stars .star.active,
.lesson-rating-stars .star.hover {
    color: #f59e0b;
}

/* Rating label */
.lesson-rating-label {
    font-size: 14px;
    font-weight: 500;
    color: #10b981;
    min-height: 20px;
    margin-bottom: 16px;
}

/* ========================================
   TEXTAREA
======================================== */
.lesson-rating-textarea {
    width: 100%;
    min-height: 80px;
    max-height: 120px;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    color: #334155;
    resize: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    margin-bottom: 20px;
}

.lesson-rating-textarea:focus {
    outline: none;
    border-color: var(--brand-color, #754ffe);
    box-shadow: 0 0 0 3px rgba(117, 79, 254, 0.15);
}

.lesson-rating-textarea::placeholder {
    color: #94a3b8;
}

/* ========================================
   BUTTONS
======================================== */
.lesson-rating-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.lesson-rating-btn {
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.lesson-rating-btn-primary {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    color: #fff;
    flex: 1;
    max-width: 180px;
}

.lesson-rating-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.lesson-rating-btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.lesson-rating-btn-skip {
    background: transparent;
    color: #64748b;
    padding: 12px 20px;
}

.lesson-rating-btn-skip:hover {
    background: #f1f5f9;
    color: #475569;
}

/* Loading state */
.lesson-rating-btn-primary.loading {
    pointer-events: none;
    opacity: 0.8;
}

.lesson-rating-btn-primary.loading i {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ========================================
   SUCCESS STATE
======================================== */
.lesson-rating-success {
    display: none;
}

.lesson-rating-modal.success .rating-form {
    display: none;
}

.lesson-rating-modal.success .lesson-rating-success {
    display: block;
}

.lesson-rating-success .success-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    animation: scaleIn 0.3s ease;
}

.lesson-rating-success .success-icon i {
    font-size: 28px;
    color: #fff;
}

.lesson-rating-success h4 {
    font-size: 18px;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 8px;
}

.lesson-rating-success p {
    font-size: 14px;
    color: #64748b;
    margin: 0;
}

@keyframes scaleIn {
    from {
        transform: scale(0);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 576px) {
    .lesson-rating-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100vw;
        height: 100vh;
        height: 100dvh;
        max-height: 100vh;
        max-height: 100dvh;
        padding: 12px;
        align-items: center;
        border-radius: 0;
        z-index: 10000;
    }

    .lesson-rating-modal {
        padding: 18px 16px;
        width: 100%;
        max-width: 420px;
        max-height: calc(100dvh - 24px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        border-radius: 14px;
    }

    .lesson-rating-modal .rating-header {
        margin-bottom: 14px;
    }

    .lesson-rating-modal .rating-header .icon-check {
        width: 44px;
        height: 44px;
        margin-bottom: 10px;
    }

    .lesson-rating-modal .rating-header .icon-check i {
        font-size: 20px;
    }

    .lesson-rating-modal .rating-header h4 {
        font-size: 16px;
        margin-bottom: 4px;
    }

    .lesson-rating-modal .rating-header p {
        font-size: 13px;
    }

    .lesson-rating-modal .rating-header .rating-subtitle {
        font-size: 12px;
        margin-top: 4px;
    }

    .lesson-rating-stars {
        gap: 6px;
        margin-bottom: 12px;
    }

    .lesson-rating-stars .star {
        font-size: 26px;
    }

    .lesson-rating-label {
        font-size: 13px;
        min-height: 18px;
        margin-bottom: 10px;
    }

    .lesson-rating-textarea {
        min-height: 60px;
        max-height: 90px;
        padding: 9px 12px;
        font-size: 13px;
        margin-bottom: 14px;
    }

    .lesson-rating-actions {
        flex-direction: column;
        gap: 8px;
    }

    .lesson-rating-btn {
        width: 100%;
        max-width: none;
        padding: 11px 16px;
        font-size: 14px;
    }

    .lesson-rating-btn-primary {
        order: 1;
    }

    .lesson-rating-btn-skip {
        order: 2;
        padding: 9px 16px;
    }
}