:root {
    /* Màu chủ đạo - Thay đổi màu này để thay đổi toàn bộ theme */
    --primary-color: #A67C1A;
    --secondary-color: #8B6914;
    --success-color: #26de81;
    --warning-color: #feca57;
    --danger-color: #ff6348;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --bg-light: #f8f9fa;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #F5EDD8 0%, #E8D5B7 100%);
    min-height: 100vh;
    color: var(--text-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Index Page Styles */
.icon-circle {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(255, 107, 157, 0.3);
}

.card {
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Back Button */
.back-button {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dark);
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    text-decoration: none;
    transition: all 0.3s ease;
}

.back-button:hover {
    background: white;
    color: var(--primary-color);
    transform: translateX(-5px);
}

/* Rating Container */
.rating-container {
    max-width: 600px;
    margin: 20px auto;
    padding: 0 15px;
}

.rating-header {
    background: white;
    padding: 30px 25px;
    border-radius: 20px 20px 0 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.rating-header h1 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.rating-header p {
    color: var(--text-light);
    font-size: 1rem;
}

.header-info {
    margin-top: 20px;
    padding: 15px;
    background: linear-gradient(135deg, #ffeef5, #fff5f7);
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.header-info-row {
    color: var(--text-dark);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Rating Body */
.rating-body {
    background: white;
    padding: 25px;
    border-radius: 0 0 20px 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-top: -1px;
}

/* Customer Info */
.customer-info {
    margin-bottom: 30px;
}

.customer-info h3 {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0f0f0;
}

.staff-header-left {
    font-weight: 600;
}

.staff-datetime {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 400;
}

.staff-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.staff-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px;
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border-radius: 12px;
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
}

.staff-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(255, 107, 157, 0.15);
    transform: translateX(5px);
}

.staff-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 600;
    flex-shrink: 0;
    overflow: hidden;
}

.staff-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.staff-info {
    flex: 1;
}

.staff-name {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 1rem;
    margin-bottom: 3px;
}

.staff-position {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Rating Section */
.rating-section {
    text-align: center;
    margin-bottom: 25px;
    padding: 25px;
    background: linear-gradient(135deg, #fff9f0, #fffbf5);
    border-radius: 15px;
}

.rating-section h4 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 20px;
    font-weight: 600;
}

.stars-container {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 15px;
}

.star {
    font-size: 3rem;
    color: #ddd;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}

.star:hover,
.star.active {
    color: var(--warning-color);
    transform: scale(1.2);
}

.star.active {
    animation: starPulse 0.5s ease;
}

@keyframes starPulse {
    0%, 100% {
        transform: scale(1.2);
    }
    50% {
        transform: scale(1.4);
    }
}

.rating-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    min-height: 30px;
}

/* Form Controls */
.form-label {
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 8px;
}

.form-control {
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 12px 15px;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(255, 107, 157, 0.15);
}

/* Quick Notes Section */
.quick-notes-section {
    margin-bottom: 25px;
    padding: 20px;
    background: linear-gradient(135deg, #f8f9fa, #ffffff);
    border-radius: 15px;
    border: 1px solid #e9ecef;
}

.quick-notes-title {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
}

.quick-notes-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.quick-note-tag {
    padding: 5px 10px;
    background: white;
    border: 1.5px solid #e9ecef;
    border-radius: 15px;
    font-size: 0.75rem;
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
}

.quick-note-tag:hover {
    border-color: var(--primary-color);
    background: #fff8f0;
}

.quick-note-tag.selected {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    font-weight: 500;
}

/* Submit Button */
.btn-submit {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(166, 124, 26, 0.3);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(166, 124, 26, 0.4);
}

.btn-submit:active {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Success Message */
.success-message {
    text-align: center;
    padding: 40px 20px;
    animation: fadeInUp 0.5s ease-out;
}

.feedback-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 3.5rem;
    animation: iconBounce 0.6s ease-out;
}

.feedback-icon.happy {
    background: linear-gradient(135deg, var(--success-color), #20bf6b);
    color: white;
}

.feedback-icon.sad {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

@keyframes iconBounce {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

.success-message h2 {
    color: var(--text-dark);
    font-size: 1.8rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.success-message p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

/* Hotline Box */
.hotline-box {
    background: linear-gradient(135deg, #fff5f5, #fffbfb);
    border: 2px solid var(--primary-color);
    border-radius: 15px;
    padding: 20px;
    margin-top: 25px;
}

.hotline-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 8px;
}

.hotline-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    margin-bottom: 8px;
}

.hotline-number:hover {
    color: var(--secondary-color);
}

.hotline-note {
    font-size: 0.85rem;
    color: var(--text-light);
    margin: 0;
    line-height: 1.5;
}

/* Responsive */
@media (max-width: 576px) {
    .rating-header h1 {
        font-size: 1.5rem;
    }
    
    .star {
        font-size: 2.5rem;
    }
    
    .hotline-number {
        font-size: 1.5rem;
    }
}

/* Loading Spinner */
.spinner-border {
    width: 1.2rem;
    height: 1.2rem;
    border-width: 2px;
}