/* ============================================================
   โรงเรียนบ้านวังวน — Shared Stylesheet
   style.css  |  ใช้ร่วมกันทุกหน้า
   ============================================================ */

/* ============================================================
   1. CSS VARIABLES
   ============================================================ */
:root {
    --primary:      #1a56db;
    --primary-dark: #1341b0;
    --green:        #10b981;
    --green-dark:   #059669;
    --pink:         #ec4899;
    --pink-light:   #fce7f3;
    --accent:       #f59e0b;
    --bg-page:      #f0f4ff;
    --card-bg:      #ffffff;
    --text-main:    #1e2a40;
    --text-mute:    #64748b;
    --border:       #e2e8f0;
    --danger:       #ef4444;
    --radius:       16px;
    --shadow:       0 20px 60px rgba(26, 86, 219, 0.12);
    --sidebar:      250px;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Sarabun', sans-serif;
    background: var(--bg-page);
    background-image: radial-gradient(circle, #c7d7fa 1px, transparent 1px);
    background-size: 28px 28px;
    min-height: 100vh;
    color: var(--text-main);
}

/* body สำหรับหน้าที่ center content (login, index) */
body.centered {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* body สำหรับหน้า dashboard (scroll ปกติ) */
body.scrollable {
    padding: 24px 16px 40px;
}

/* ============================================================
   3. BANNER PATTERN (SVG overlay ใช้ทุก banner)
   ============================================================ */
.banner-pattern::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}

/* ============================================================
   4. BANNER SHARED (โลโก้, ชื่อ, badges)
   ============================================================ */
.banner-logo {
    width: 100px;
    height: 100px;
    object-fit: contain;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    padding: 12px;
    margin-bottom: 24px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    position: relative;
}

.banner-school-name {
    font-size: 1.45rem;
    font-weight: 700;
    color: #fff;
    text-align: center;
    line-height: 1.4;
    margin-bottom: 12px;
    position: relative;
}

.banner-tagline {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.72);
    text-align: center;
    line-height: 1.65;
    position: relative;
}

.banner-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 28px;
    justify-content: center;
    position: relative;
}

.banner-badge {
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.85);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.82rem;
}

/* ============================================================
   5. LOGIN WRAPPER LAYOUT (login.php + student_login.php)
   ============================================================ */
.login-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 900px;
    width: 100%;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.login-banner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 50px 40px;
    position: relative;
    overflow: hidden;
}

/* สีน้ำเงิน — ครู */
.login-banner.blue {
    background: linear-gradient(160deg, #1a56db 0%, #0d3b9e 60%, #072b78 100%);
}

/* สีเขียว — นักเรียน */
.login-banner.green {
    background: linear-gradient(160deg, #0e9e6a 0%, #0a7a52 60%, #065c3e 100%);
}

.login-form-side {
    padding: 50px 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.form-headline {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 6px;
}

.form-subheadline {
    color: var(--text-mute);
    font-size: 0.95rem;
    margin-bottom: 36px;
}

/* ============================================================
   6. FORM ELEMENTS
   ============================================================ */
.form-floating-group {
    position: relative;
    margin-bottom: 20px;
}

.form-label-top {
    display: block;
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text-mute);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

.form-floating-group .field-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-mute);
    font-size: 1rem;
    pointer-events: none;
    transition: color 0.2s;
}

.form-floating-group input {
    width: 100%;
    padding: 14px 16px 14px 44px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-family: 'Sarabun', sans-serif;
    font-size: 1rem;
    color: var(--text-main);
    background: #f8faff;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    outline: none;
}

.form-floating-group input:focus {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(26, 86, 219, 0.1);
}

.form-floating-group:focus-within .field-icon {
    color: var(--primary);
}

/* input สำหรับเลขประจำตัวนักเรียน (student_login.php) */
.form-floating-group input.student-code {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 8px;
    text-align: center;
}

.form-floating-group input.student-code::placeholder {
    letter-spacing: 4px;
    font-size: 1.1rem;
    font-weight: 400;
    color: #b0bec5;
}

.form-floating-group input.student-code:focus {
    border-color: var(--green);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.form-floating-group:focus-within .field-icon.green {
    color: var(--green);
}

/* toggle password button */
.toggle-password {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-mute);
    cursor: pointer;
    padding: 4px;
    font-size: 1rem;
    transition: color 0.2s;
}
.toggle-password:hover { color: var(--primary); }

/* ============================================================
   7. ALERTS
   ============================================================ */
.error-alert {
    background: #fff5f5;
    border: 1.5px solid #fca5a5;
    border-left: 4px solid var(--danger);
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 20px;
    color: #b91c1c;
    font-size: 0.93rem;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.success-alert {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-left: 4px solid var(--green);
    border-radius: 10px;
    padding: 14px 16px;
    margin-bottom: 20px;
    color: #065f46;
    font-size: 0.93rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.hint-box {
    background: #f0fdf8;
    border: 1px solid #a7f3d0;
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 0.85rem;
    color: #065f46;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

/* ============================================================
   8. BUTTONS
   ============================================================ */
.btn-login,
.btn-submit {
    width: 100%;
    padding: 14px;
    color: #fff;
    border: none;
    border-radius: 10px;
    font-family: 'Sarabun', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 8px;
    text-decoration: none;
}

.btn-login {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 6px 20px rgba(26, 86, 219, 0.3);
}
.btn-login:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(26, 86, 219, 0.38);
}

.btn-submit {
    background: linear-gradient(135deg, var(--green), var(--green-dark));
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.32);
}
.btn-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(16, 185, 129, 0.42);
}

.btn-login:active:not(:disabled),
.btn-submit:active:not(:disabled) { transform: translateY(0); }

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

.btn-logout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: #fff;
    border: none;
    border-radius: 12px;
    font-family: 'Sarabun', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.15s, box-shadow 0.15s;
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.28);
}
.btn-logout:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(239, 68, 68, 0.36);
    color: #fff;
}

/* ============================================================
   9. BACK LINK
   ============================================================ */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 28px;
    color: var(--text-mute);
    font-size: 0.9rem;
    text-decoration: none;
    transition: color 0.2s;
}
.back-link:hover { color: var(--primary); }
.back-link.green:hover { color: var(--green); }

/* ============================================================
   10. INDEX PAGE — Role Cards
   ============================================================ */
.main-container {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    max-width: 960px;
    width: 100%;
    overflow: hidden;
}

.page-banner {
    background: linear-gradient(160deg, #1a56db 0%, #0d3b9e 60%, #072b78 100%);
    padding: 44px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.banner-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff;
    text-align: center;
    line-height: 1.5;
    margin-bottom: 10px;
    position: relative;
}

.banner-subtitle {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    position: relative;
}

.role-section {
    padding: 48px 40px;
}

.section-label {
    text-align: center;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-mute);
    margin-bottom: 30px;
    letter-spacing: 0.3px;
}

.role-selector {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

.role-card {
    flex: 1;
    min-width: 260px;
    max-width: 380px;
    background: #f8faff;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-decoration: none;
    color: var(--text-main);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.role-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(26, 86, 219, 0.15);
    border-color: var(--primary);
    background: #fff;
}

.role-icon-wrap {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 20px;
    transition: transform 0.2s ease;
}
.role-card:hover .role-icon-wrap { transform: scale(1.1); }

.teacher-wrap { background: rgba(26, 86, 219, 0.1); color: var(--primary); }
.student-wrap { background: rgba(16, 185, 129, 0.1); color: var(--green); }

.role-card h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
}
.role-card p {
    color: var(--text-mute);
    font-size: 0.92rem;
    line-height: 1.65;
    margin-bottom: 24px;
    flex-grow: 1;
}

.role-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    font-family: 'Sarabun', sans-serif;
    transition: filter 0.2s;
    border: none;
    cursor: pointer;
}
.role-card:hover .role-btn { filter: brightness(1.1); }

.teacher-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 4px 14px rgba(26, 86, 219, 0.28);
}
.student-btn {
    background: linear-gradient(135deg, var(--green), var(--green-dark));
    color: #fff;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.28);
}

/* ============================================================
   11. STUDENT DASHBOARD — Profile Card
   ============================================================ */
.dashboard-wrapper {
    max-width: 480px;
    margin: 0 auto;
}

.profile-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 16px;
}

.profile-banner {
    background: linear-gradient(160deg, #0e9e6a 0%, #0a7a52 60%, #065c3e 100%);
    padding: 36px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.profile-avatar-wrap {
    position: relative;
    display: inline-block;
    margin-bottom: 18px;
}

.profile-img {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    position: relative;
}

.profile-avatar-placeholder {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: 4px solid rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.6rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.banner-name {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
    position: relative;
}

.banner-badges-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    position: relative;
}

.grade-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 0.88rem;
    font-weight: 600;
}

.year-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.82rem;
}

/* ============================================================
   12. STUDENT DASHBOARD — Menu
   ============================================================ */
.menu-section {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 16px;
}

.menu-section-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-mute);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.menu-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #f8faff;
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 12px;
    text-decoration: none;
    color: var(--text-main);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s, background 0.2s;
}
.menu-btn:last-of-type { margin-bottom: 0; }
.menu-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(26, 86, 219, 0.1);
    border-color: var(--primary);
    background: #fff;
}

.menu-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}
.icon-green { background: rgba(16, 185, 129, 0.12); color: var(--green); }
.icon-blue  { background: rgba(26, 86, 219, 0.1);   color: var(--primary); }
.icon-pink  { background: var(--pink-light);         color: var(--pink); }

.menu-text h5 {
    margin: 0 0 3px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-main);
}
.menu-text p {
    margin: 0;
    font-size: 0.83rem;
    color: var(--text-mute);
    line-height: 1.4;
}

.menu-arrow {
    margin-left: auto;
    color: var(--border);
    font-size: 0.9rem;
    flex-shrink: 0;
    transition: color 0.2s, transform 0.2s;
}
.menu-btn:hover .menu-arrow {
    color: var(--primary);
    transform: translateX(3px);
}

/* ============================================================
   13. PAGE FOOTER
   ============================================================ */
.page-footer {
    text-align: center;
    color: var(--text-mute);
    font-size: 0.82rem;
    margin-top: 20px;
}

/* ============================================================
   14. RESPONSIVE
   ============================================================ */
@media (max-width: 700px) {
    .login-wrapper {
        grid-template-columns: 1fr;
    }
    .login-banner {
        padding: 36px 24px 32px;
    }
    .login-form-side {
        padding: 36px 24px 40px;
    }
    .form-headline { font-size: 1.5rem; }
}

@media (max-width: 640px) {
    .role-section  { padding: 32px 20px; }
    .page-banner   { padding: 36px 20px; }
    .banner-title  { font-size: 1.25rem; }
    .role-card     { min-width: 100%; }
}

@media (max-width: 480px) {
    body.scrollable { padding: 16px 12px 36px; }
    .menu-section   { padding: 20px; }
    .banner-name    { font-size: 1.2rem; }
}
/* ============================================================
   15. ADMIN DASHBOARD — Layout & Shared Components
   ============================================================ */

/* หน้า admin ที่มี sidebar */
body.admin-page {
    display: block;
    background: var(--bg-page);
}

#mainContent {
    margin-left: var(--sidebar);
    padding: 32px;
    transition: margin 0.3s;
}

/* ===== PAGE HEADER ===== */
.page-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 28px;
}

.page-header-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    box-shadow: 0 4px 14px rgba(26,86,219,0.28);
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.page-header-text h1 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.2;
    margin: 0;
}

.page-header-text p {
    font-size: 0.85rem;
    color: var(--text-mute);
    margin: 2px 0 0;
}

/* ===== ADMIN CARD ===== */
.admin-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    overflow: hidden;
}

.admin-card-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.admin-card-title {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-mute);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.admin-card-body {
    padding: 24px;
}

/* ===== ALERT MESSAGES ===== */
.alert {
    padding: 14px 16px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 0.93rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success-admin {
    background: #f0fdf4;
    border: 1.5px solid #bbf7d0;
    border-left: 4px solid var(--green);
    color: #065f46;
}

.alert-error {
    background: #fff5f5;
    border: 1.5px solid #fca5a5;
    border-left: 4px solid var(--danger);
    color: #b91c1c;
}

/* ===== ADMIN TABLE ===== */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

.admin-table thead th {
    background: #f8faff;
    color: var(--text-mute);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 16px;
    border-bottom: 2px solid var(--border);
    border-top: 1px solid var(--border);
    white-space: nowrap;
}

.admin-table tbody td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-main);
    vertical-align: middle;
}

.admin-table tbody tr:last-child td { border-bottom: none; }
.admin-table tbody tr:hover td { background: #f8faff; }

/* ===== ADMIN BUTTONS ===== */
.btn-admin {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 16px;
    border-radius: 8px;
    font-family: 'Sarabun', sans-serif;
    font-size: 0.88rem;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    border: none;
    transition: transform 0.15s, box-shadow 0.15s, filter 0.15s;
    white-space: nowrap;
}

.btn-admin:hover { transform: translateY(-1px); filter: brightness(1.08); }
.btn-admin:active { transform: translateY(0); }

.btn-primary-admin {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 3px 10px rgba(26,86,219,0.25);
}

.btn-warning-admin {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff;
    box-shadow: 0 3px 10px rgba(245,158,11,0.25);
}

.btn-danger-admin {
    background: linear-gradient(135deg, var(--danger), #dc2626);
    color: #fff;
    box-shadow: 0 3px 10px rgba(239,68,68,0.25);
}

.btn-secondary-admin {
    background: #f1f5f9;
    color: var(--text-mute);
    border: 2px solid var(--border);
    box-shadow: none;
}

.btn-secondary-admin:hover {
    background: #e2e8f0;
    color: var(--text-main);
}

/* ===== TEXT MUTED ===== */
.text-muted-admin {
    color: var(--text-mute);
    font-style: italic;
    font-size: 0.88rem;
}

/* ===== BADGE (teacher occupied) ===== */
.badge-occupied {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
    background: rgba(239,68,68,0.1);
    color: #b91c1c;
    border: 1px solid rgba(239,68,68,0.25);
    margin-left: 4px;
}

/* ===== MODAL ===== */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,0.45);
    z-index: 200;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.open { display: flex; }

.modal-box {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: 0 24px 60px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 480px;
    overflow: hidden;
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: translateY(16px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h5 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
}

.modal-header.danger { background: linear-gradient(135deg, var(--danger), #dc2626); }
.modal-header.danger h5 { color: #fff; }
.modal-header.danger .modal-close { color: rgba(255,255,255,0.8); }

.modal-close {
    background: none;
    border: none;
    color: var(--text-mute);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: background 0.15s;
    line-height: 1;
}
.modal-close:hover { background: rgba(0,0,0,0.06); }

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* ===== FORM ELEMENTS (admin forms) ===== */
.form-group {
    margin-bottom: 18px;
}

.form-label-admin {
    display: block;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-mute);
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

.form-select-admin,
.form-input-admin {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-family: 'Sarabun', sans-serif;
    font-size: 0.95rem;
    color: var(--text-main);
    background: #f8faff;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    appearance: auto;
}

.form-select-admin:focus,
.form-input-admin:focus {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(26,86,219,0.1);
}

.form-hint {
    font-size: 0.78rem;
    color: var(--text-mute);
    margin-top: 4px;
}

/* ===== RESPONSIVE ADMIN ===== */
@media (max-width: 900px) {
    #mainContent { margin-left: 0; padding: 20px 16px; }
}

@media (max-width: 600px) {
    .admin-table thead { display: none; }
    .admin-table tbody tr {
        display: block;
        border: 1.5px solid var(--border);
        border-radius: 12px;
        margin-bottom: 12px;
        padding: 14px;
        background: var(--card-bg);
    }
    .admin-table tbody tr:last-child { border-bottom: 1.5px solid var(--border); }
    .admin-table tbody td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        border: none;
        padding: 6px 0;
        font-size: 0.9rem;
    }
    .admin-table tbody td::before {
        content: attr(data-label);
        font-size: 0.75rem;
        font-weight: 700;
        color: var(--text-mute);
        text-transform: uppercase;
    }
    .admin-card-body { padding: 14px; }
    #mainContent { padding: 14px 12px; }
}