/* VNPT Meeting - Professional UI Stylesheet */
/* Brand Colors: Blue #174279, Red #D6441C */

:root {
    /* VNPT Official Brand Colors */
    --vnpt-blue: #174279;
    --vnpt-dark-blue: #0f2e52;
    --vnpt-light-blue: #1d5ca8;
    --vnpt-red: #d6441c;
    --vnpt-light-red: #e85a35;

    /* Neutral Colors */
    --bg-gradient-start: #f0f4f8;
    --bg-gradient-end: #e2e8f0;
    --text-color: #1a202c;
    --text-muted: #718096;
    --white: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.95);

    /* UI Colors */
    --success: #38a169;
    --warning: #dd6b20;
    --danger: #e53e3e;
    --info: #3182ce;

    /* Effects */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1), 0 6px 10px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    background-attachment: fixed;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   HEADER - Premium VNPT Design
   ======================================== */
.vnpt-header {
    background: linear-gradient(135deg, var(--vnpt-blue) 0%, var(--vnpt-dark-blue) 100%);
    color: white;
    padding: 0;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.vnpt-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
}

.vnpt-header .logo {
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
    letter-spacing: -0.02em;
}

.vnpt-header .logo-img {
    height: 28px;
    width: auto;
    filter: brightness(0) invert(1);
}

.vnpt-header nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.vnpt-header nav a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    padding: 10px 16px;
    font-weight: 500;
    font-size: 0.9rem;
    border-radius: 8px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.vnpt-header nav a:hover {
    background: rgba(255, 255, 255, 0.15);
    color: white;
}

.vnpt-header nav a i {
    font-size: 1rem;
    opacity: 0.8;
}

.welcome-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    padding-right: 16px;
    margin-right: 8px;
    border-right: 1px solid rgba(255, 255, 255, 0.2);
}

.welcome-text strong {
    color: white;
    font-weight: 600;
}

/* ========================================
   MAIN CONTENT
   ======================================== */
main {
    flex: 1;
    padding: 32px 0;
}

/* ========================================
   FOOTER - Clean & Minimal
   ======================================== */
.vnpt-footer {
    background: var(--white);
    border-top: 1px solid #e2e8f0;
    padding: 24px 0;
    text-align: center;
    color: var(--text-muted);
    margin-top: auto;
    font-size: 0.875rem;
}

.vnpt-footer p {
    margin: 0;
}

/* ========================================
   AUTH BOX - Modern Login Card
   ======================================== */
.auth-box {
    background: var(--card-bg);
    padding: 48px 40px;
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
    max-width: 440px;
    margin: 60px auto;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.auth-header {
    text-align: center;
    margin-bottom: 36px;
}

/* Logo decoration removed - using actual VNPT logo image */

.auth-header h2 {
    color: var(--vnpt-blue);
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 0 8px;
    letter-spacing: -0.02em;
}

.auth-header p {
    color: var(--text-muted);
    margin: 0;
    font-size: 0.95rem;
}

/* ========================================
   FORMS - Premium Inputs
   ======================================== */
.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-color);
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="datetime-local"],
select,
textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 1rem;
    background: var(--white);
    transition: var(--transition);
    color: var(--text-color);
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--vnpt-blue);
    outline: none;
    box-shadow: 0 0 0 4px rgba(23, 66, 121, 0.1);
}

input::placeholder {
    color: #a0aec0;
}

/* ========================================
   BUTTONS - Vibrant & Interactive
   ======================================== */
button.btn-vnpt,
a.btn-vnpt {
    background: linear-gradient(135deg, var(--vnpt-blue) 0%, var(--vnpt-light-blue) 100%);
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 12px rgba(23, 66, 121, 0.3);
}

button.btn-vnpt:hover,
a.btn-vnpt:hover {
    background: linear-gradient(135deg, var(--vnpt-light-blue) 0%, var(--vnpt-blue) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(23, 66, 121, 0.4);
}

button.btn-vnpt:active,
a.btn-vnpt:active {
    transform: translateY(0);
}

.btn-secondary {
    background: linear-gradient(135deg, #64748b 0%, #475569 100%) !important;
    box-shadow: 0 4px 12px rgba(100, 116, 139, 0.3) !important;
}

.btn-secondary:hover {
    box-shadow: 0 6px 20px rgba(100, 116, 139, 0.4) !important;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger) 0%, #c53030 100%);
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(229, 62, 62, 0.3);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(229, 62, 62, 0.4);
}

/* ========================================
   PAGE HEADER
   ======================================== */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    background: var(--card-bg);
    padding: 24px 28px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.page-header h2 {
    margin: 0;
    color: var(--vnpt-blue);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* ========================================
   DASHBOARD
   ======================================== */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    background: var(--card-bg);
    padding: 24px 28px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.6);
}

/* ========================================
   TABLES - Modern Data Display
   ======================================== */
.table-container {
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid #edf2f7;
}

.data-table th {
    background: linear-gradient(135deg, var(--vnpt-blue) 0%, var(--vnpt-dark-blue) 100%);
    color: white;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
}

.data-table tbody tr {
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background: linear-gradient(90deg, rgba(23, 66, 121, 0.04) 0%, rgba(23, 66, 121, 0.02) 100%);
}

.data-table tr:last-child td {
    border-bottom: none;
}

/* ========================================
   BADGES - Status Indicators
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(72, 187, 120, 0.4);
}

.badge-info {
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(66, 153, 225, 0.4);
}

.badge-secondary {
    background: linear-gradient(135deg, #a0aec0 0%, #718096 100%);
    color: white;
}

.badge-default {
    background: #edf2f7;
    color: #4a5568;
}

/* ========================================
   ACTION BUTTONS - Icon Buttons
   ======================================== */
.actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.btn-action {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    text-decoration: none;
    font-size: 0.875rem;
}

.btn-action:hover {
    transform: translateY(-2px);
}

.btn-edit {
    background: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(66, 153, 225, 0.4);
}

.btn-role {
    background: linear-gradient(135deg, #9f7aea 0%, #805ad5 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(159, 122, 234, 0.4);
}

.btn-delete {
    background: linear-gradient(135deg, #fc8181 0%, #e53e3e 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(229, 62, 62, 0.4);
}

/* ========================================
   CARDS & CONTAINERS
   ======================================== */
.meeting-card {
    background: var(--card-bg);
    padding: 28px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-left: 4px solid var(--vnpt-red);
}

.meeting-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.meeting-card h3 {
    margin-top: 0;
    color: var(--vnpt-blue);
    font-weight: 700;
}

.form-card,
.settings-form {
    background: var(--card-bg);
    padding: 32px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(255, 255, 255, 0.6);
}

/* ========================================
   ALERTS - Notification Banners
   ======================================== */
.alert {
    padding: 16px 20px;
    margin-bottom: 24px;
    border-radius: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-danger {
    background: linear-gradient(90deg, rgba(254, 178, 178, 0.3) 0%, rgba(254, 178, 178, 0.1) 100%);
    color: #c53030;
    border: 1px solid rgba(254, 178, 178, 0.5);
}

.alert-success {
    background: linear-gradient(90deg, rgba(154, 230, 180, 0.3) 0%, rgba(154, 230, 180, 0.1) 100%);
    color: #276749;
    border: 1px solid rgba(154, 230, 180, 0.5);
}

.alert-warning {
    background: linear-gradient(90deg, rgba(250, 240, 137, 0.3) 0%, rgba(250, 240, 137, 0.1) 100%);
    color: #975a16;
    border: 1px solid rgba(250, 240, 137, 0.5);
}

/* ========================================
   SECTION TITLES
   ======================================== */
.section-title {
    border-bottom: 2px solid #edf2f7;
    padding-bottom: 12px;
    margin-bottom: 24px;
    margin-top: 32px;
    color: var(--vnpt-blue);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.section-title:first-child {
    margin-top: 0;
}

/* Settings Page Grid */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.settings-column {
    min-width: 0;
}

@media (max-width: 900px) {
    .settings-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

/* ========================================
   JITSI MEETING FRAME
   ======================================== */
.meet-frame-container {
    height: 85vh;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    background: #000;
}

#jitsi-meet-conf-container {
    height: 100%;
    width: 100%;
}

/* ========================================
   UTILITIES
   ======================================== */
.required {
    color: var(--vnpt-red);
}

.input-disabled {
    background: #edf2f7 !important;
    cursor: not-allowed;
    opacity: 0.7;
}

small {
    display: block;
    margin-top: 6px;
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ========================================
   MEETING LIST GRID
   ======================================== */
.meeting-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.meeting-info {
    margin: 16px 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.meeting-info p {
    margin: 6px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.meeting-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.btn-join {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--vnpt-red) 0%, var(--vnpt-light-red) 100%);
    color: white;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    width: 100%;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(214, 68, 28, 0.3);
}

.btn-join:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(214, 68, 28, 0.4);
}

/* ========================================
   FORM ACTIONS
   ======================================== */
.form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid #edf2f7;
}

/* ========================================
   CHECKBOX STYLING
   ======================================== */
input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--vnpt-blue);
    cursor: pointer;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 576px) {
    .vnpt-header .container {
        flex-direction: column;
        gap: 12px;
        padding: 12px 16px;
    }

    .vnpt-header nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .welcome-text {
        border-right: none;
        padding-right: 0;
        margin-right: 0;
        display: none;
    }

    .vnpt-header nav a {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .page-header,
    .dashboard-header {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .auth-box {
        margin: 24px 16px;
        padding: 32px 24px;
    }

    .settings-form {
        padding: 20px;
    }

    .form-group input,
    .form-group select {
        font-size: 0.9rem;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.meeting-card,
.auth-box,
.table-container,
.form-card {
    animation: fadeIn 0.4s ease-out;
}

/* ========================================
   CUSTOM SCROLLBAR
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--vnpt-blue);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--vnpt-dark-blue);
}