/* File: assets/css/style.css */
:root {
    --primary-color: #0d47a1;
    --secondary-color: #1976d2;
    --accent-color: #ffc107;
    --text-dark: #212529;
    --text-light: #6c757d;
    --bg-light: #f4f6f9;
    --bg-white: #ffffff;
    --border-color: #dee2e6;
    --red-color: #d32f2f;
    --green-color: #388e3c;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    --border-radius: 10px;
    --header-bg: #e3f2fd; /* Màu nền xanh nhạt cho header */
    --secondary-btn-bg: #6c757d;
    --secondary-btn-hover-bg: #5a6268;
}

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

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    max-width: 1300px;
    margin: 0 auto;
    background: var(--bg-white);
    box-shadow: var(--shadow);
    overflow: hidden;
}

/* --- Header trang chủ --- */
header {
    background-image: linear-gradient(to bottom, var(--bg-white), var(--header-bg));
    padding: 16px 25px;
    border-bottom: 3px solid var(--primary-color);
}

header .header-content {
    display: flex;
    align-items: center;
    justify-content: flex-start; 
    gap: 25px;
}

header .header-left {
    display: flex;
    align-items: center;
    gap: 25px;
    min-width: 0; /* Cho phép co giãn trên flexbox */
}

header .header-right {
    display: none;
}

header .header-logo {
    height: 80px;
    width: auto;
    flex-shrink: 0;
}

header .header-text {
    text-align: left; 
    min-width: 0; /* Cho phép co giãn trên flexbox */
}

header .header-text h1 {
    font-family: 'Oswald', sans-serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
    line-height: 1.2;
    text-transform: uppercase;
    white-space: nowrap; /* Ngăn không cho xuống dòng */
}

header .header-text h2 {
    font-family: 'Roboto', sans-serif;
    font-size: 22px;
    font-weight: 500;
    color: var(--text-dark);
    margin: 5px 0 0 0;
    line-height: 1.2;
    white-space: nowrap; /* Ngăn không cho xuống dòng */
}

/* --- Main Content Layout --- */
.content-wrapper {
    display: flex;
    flex-wrap: wrap;
    padding: 25px;
    gap: 25px;
}
.content-wrapper-full {
    padding: 25px;
}

.today-column {
    flex: 1;
    min-width: 60%;
}

.future-column {
    flex: 1;
    min-width: 35%;
}

/* --- Today & Future Sections --- */
.today-section, .future-section, .form-section, .events-section {
    background: var(--bg-white);
    padding: 10px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--accent-color);
}

.section-header-left {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.section-header-right {
    display: flex;
    gap: 10px;
}

.section-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--red-color);
}

.section-date {
    font-size: 18px;
    font-weight: 500;
    color: var(--text-dark);
}

.future-section {
    background: #e3f2fd;
}

.future-header {
    background-color: var(--primary-color);
    color: white;
    padding: 15px;
    text-align: center;
    font-size: 20px;
    font-weight: 700;
    border-radius: 8px;
    margin-bottom: 20px;
}

.future-events {
    /* Bỏ chiều cao cố định để hiển thị hết nội dung */
}

.day-header {
    font-weight: 700;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.7);
    border-left: 4px solid var(--secondary-color);
    margin: 20px 0 10px;
    border-radius: 4px;
}

/* --- Schedule Item --- */
.schedule-item {
    padding: 10px;
    border: 1px solid #ddd;
    border-left: 5px solid var(--primary-color);
    margin-bottom: 5px;
    border-radius: 8px;
    background: var(--bg-white);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.schedule-item:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.schedule-item div {
    display: flex;
    align-items: flex-start;
    margin-bottom: 12px;
}
.schedule-item div:last-child {
    margin-bottom: 0;
}

.schedule-item i {
    font-size: 16px;
    margin-right: 12px;
    margin-top: 4px;
    width: 20px;
    text-align: center;
    color: var(--secondary-color);
}

.schedule-item .time {
    font-weight: 700;
    font-size: 18px;
    color: var(--primary-color);
}
.schedule-item .host {
    color: var(--green-color);
    font-weight: 700;
}
.schedule-item .participant {
    color: var(--red-color);
    font-weight: 700;
}
.schedule-item .location {
    color: var(--text-light);
    font-style: italic;
}
.schedule-item strong {
    min-width: 100px;
    display: inline-block;
    color: var(--text-dark);
    font-weight: 500;
}

.future-column .schedule-item strong {
    display: none;
}

.future-column .schedule-item div {
    align-items: center;
}

.future-column .schedule-item i {
    margin-top: 0;
}


/* --- Footer --- */
footer {
    background: #343a40;
    color: #f8f9fa;
    padding: 30px 25px;
    text-align: center;
    margin-top: 25px;
}

.footer-content .footer-title {
    font-size: 20px;
    color: #e28743;
  
}

.footer-content .footer-line {
    font-size: 15px;
    color: #ccc;

}

.footer-content .footer-contact {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 15px 30px; /* row-gap column-gap */
    flex-wrap: wrap;
    font-size: 15px;
    color: #ccc;
}

.footer-contact span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact a {
    color: var(--bg-white);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-contact a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.footer-copyright {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #495057;
    font-size: 14px;
    color: #adb5bd;
}

/* --- Admin & Login Page --- */
.page-center {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 40px);
}
.auth-container {
    width: 100%;
    max-width: 480px;
    background: var(--bg-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.admin-container {
    max-width: 100%;
    padding: 0;
}

.admin-page-header {
    background-image: linear-gradient(to bottom, var(--bg-white), var(--header-bg));
    padding: 16px 25px;
    border-bottom: 3px solid var(--primary-color);
}
.admin-page-header .header-content {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 25px;
}

.admin-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid var(--border-color);
}

.admin-nav-actions {
    display: flex;
    gap: 10px;
}

.admin-layout-vertical {
    padding: 0 25px 25px 25px;
}

.admin-layout-vertical .form-section {
    margin-bottom: 25px;
}

.auth-header {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: white;
    padding: 30px;
    text-align: center;
}
.auth-header h1 {
    font-size: 24px;
}
.auth-content {
    padding: 30px;
}

/* --- Forms --- */
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 700;
    color: var(--text-light);
}
.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    font-family: 'Roboto', sans-serif;
    transition: all 0.3s ease;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(13, 71, 161, 0.2);
}
.form-grid-split {
    display: flex;
    gap: 25px;
}
.form-column {
    flex: 1;
    display: flex;
    flex-direction: column;
}
.form-column .form-group {
    margin-bottom: 15px;
}
.form-column textarea {
    flex-grow: 1;
}
.form-column .btn {
    margin-top: auto;
}

.password-hint {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 5px;
    display: block;
}

.time-picker {
    display: flex;
    align-items: center;
    gap: 10px;
}
.time-picker select {
    flex: 1;
}
.time-picker span {
    font-weight: 500;
}


/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    gap: 8px;
    transition: all 0.3s ease;
}
.btn-full { width: 100%; }
.btn-primary { background: var(--primary-color); color: white; }
.btn-primary:hover { background: var(--secondary-color); transform: translateY(-2px); }
.btn-danger { background: var(--red-color); color: white; }
.btn-danger:hover { background: #c62828; transform: translateY(-2px); }
.btn-success { background: var(--green-color); color: white; }
.btn-success:hover { background: #2e7d32; transform: translateY(-2px); }
.btn-sm { padding: 8px 12px; font-size: 14px; }
.btn-secondary { background: var(--secondary-btn-bg); color: white; }
.btn-secondary:hover { background: var(--secondary-btn-hover-bg); transform: translateY(-2px); }

/* --- Admin Table --- */
.events-table-wrapper {
    overflow-x: auto;
    max-height: 60vh;
}
.events-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
.events-table th, .events-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    word-wrap: break-word;
    vertical-align: middle;
}
.events-table th {
    background: var(--bg-light);
    font-weight: 700;
    position: sticky;
    top: 0;
    z-index: 10;
}
.events-table th:nth-child(1), .events-table td:nth-child(1) { width: 10%; }
.events-table th:nth-child(2), .events-table td:nth-child(2) { width: 10%; }
.events-table th:nth-child(3), .events-table td:nth-child(3) { width: 15%; }
.events-table th:nth-child(4), .events-table td:nth-child(4) { width: 15%; }
.events-table th:nth-child(5), .events-table td:nth-child(5) { width: 40%; }
.events-table th:nth-child(6), .events-table td:nth-child(6) { width: 10%; }

.events-table tr:hover {
    background-color: #e3f2fd;
}
.events-table .host { color: var(--green-color); font-weight: 500; }
.events-table .participant { color: var(--red-color); font-weight: 500; }
.events-table .action-buttons {
    display: flex;
    gap: 8px;
}

.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 8px;
    border: 1px solid transparent;
    display: flex;
    align-items: center;
    gap: 10px;
}
.alert-success { background-color: #d4edda; border-color: #c3e6cb; color: #155724; }
.alert-danger { background-color: #f8d7da; border-color: #f5c6cb; color: #721c24; }
.no-events { text-align: center; padding: 20px; color: var(--text-light); }

/* --- Modal --- */
.modal {
    display: none; 
    position: fixed; 
    z-index: 1000; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto; 
    background-color: rgba(0,0,0,0.6);
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: #fefefe;
    margin: 10% auto;
    padding: 0;
    border: 1px solid #888;
    width: 90%;
    max-width: 500px;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    animation: slideIn 0.3s;
}

.modal-content .form-section {
    border: none;
    box-shadow: none;
}

.modal-content .form-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-button {
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close-button:hover,
.close-button:focus {
    color: black;
    text-decoration: none;
}

@keyframes fadeIn {
    from {opacity: 0} 
    to {opacity: 1}
}

@keyframes slideIn {
    from {top: -100px; opacity: 0}
    to {top: 0; opacity: 1}
}

/* Định dạng cho trang tìm kiếm */
.search-form {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: flex-end;
}
.search-form-inputs {
    display: flex;
    gap: 20px;
    flex-grow: 1;
}
.search-form .form-group {
    flex: 1;
    margin-bottom: 0;
}
.search-results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.search-results-header .form-title {
    margin-bottom: 0;
    border-bottom: none;
}