/**
 * ISU Cauayan Club Membership and Activity Management System (CMAMS)
 * Primary Stylesheet - Matcha Green University Theme
 *
 * Designed for institutional clarity, accessibility, and high contrast.
 * Strict adherence to text-only UI (no emojis, no icons, no icon fonts).
 */

:root {
    /* Color Palette - Matcha Green Institutional System */
    --bg-page: #F3F7EC;            /* Very light matcha tint */
    --border-soft: #A9C47F;        /* Soft matcha border/accent */
    --green-medium: #5E8C3A;       /* Medium green for buttons, links, active headers */
    --green-medium-hover: #4C722E; /* Darker medium green on hover */
    --green-deep: #234B2A;         /* Deep forest green for main headers & bars */
    --green-deep-hover: #19361E;
    --gold-accent: #C9A227;        /* Soft gold for focus & active indicator */
    --gold-accent-hover: #B08C1E;

    /* Neutrals and Status Colors */
    --surface-card: #FFFFFF;
    --surface-alt: #F9FAF7;
    --text-primary: #1C2A1E;       /* Deep dark green-black for high contrast */
    --text-secondary: #485A4C;     /* Muted readable body text */
    --text-muted: #6E8171;
    --text-light: #FFFFFF;

    --status-success-bg: #EAF7EE;
    --status-success-text: #19692C;
    --status-success-border: #7BCB90;

    --status-warning-bg: #FEF8E7;
    --status-warning-text: #8A6100;
    --status-warning-border: #ECC968;

    --status-danger-bg: #FDF2F2;
    --status-danger-text: #9B1C1C;
    --status-danger-border: #F8B4B4;

    --status-info-bg: #EFF6FF;
    --status-info-text: #1E429F;
    --status-info-border: #A4CAFE;

    /* Layout & Spacing */
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --btn-min-height: 44px;
    --shadow-subtle: 0 1px 3px rgba(35, 75, 42, 0.08);
    --shadow-card: 0 2px 6px rgba(35, 75, 42, 0.06);
    --container-max: 1240px;
}

/* Reset and Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-stack);
    background-color: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--green-deep);
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 0.5rem;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.45rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

p {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

a {
    color: var(--green-medium);
    text-decoration: underline;
    transition: color 0.15s ease-in-out;
}

a:hover, a:focus {
    color: var(--green-deep);
}

/* Institutional Header Bar */
.top-institutional-bar {
    background-color: var(--green-deep);
    color: var(--text-light);
    padding: 12px 20px;
    border-bottom: 3px solid var(--gold-accent);
}

.institutional-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.university-wordmark {
    font-size: 0.88rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 600;
    color: #E2ECD8;
}

.system-title-link {
    display: block;
    color: var(--text-light);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.system-title-link:hover {
    color: #EAF7EE;
}

.auth-user-badge {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 0.88rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.auth-user-role {
    display: inline-block;
    background-color: var(--gold-accent);
    color: var(--green-deep);
    font-weight: 700;
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 3px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.logout-link {
    color: #FFD4D4;
    text-decoration: none;
    font-weight: 600;
}

.logout-link:hover {
    color: #FFFFFF;
    text-decoration: underline;
}

/* Institutional Navigation Bar */
.institutional-nav {
    background-color: var(--green-medium);
    border-bottom: 1px solid var(--border-soft);
    padding: 0 20px;
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 16px;
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    border-bottom: 3px solid transparent;
    transition: background 0.15s ease;
}

.nav-link:hover, .nav-link:focus {
    background-color: var(--green-medium-hover);
    color: var(--text-light);
}

.nav-link.active {
    background-color: var(--green-deep);
    border-bottom-color: var(--gold-accent);
    color: var(--text-light);
}

/* Main Layout Container */
.page-wrapper {
    flex: 1;
    max-width: var(--container-max);
    width: 100%;
    margin: 24px auto;
    padding: 0 20px;
}

/* Page Header */
.page-header {
    background-color: var(--surface-card);
    border: 1px solid var(--border-soft);
    border-left: 5px solid var(--green-deep);
    padding: 18px 24px;
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    box-shadow: var(--shadow-subtle);
}

.page-header-title {
    margin: 0;
}

.page-header-subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 4px;
    margin-bottom: 0;
}

.page-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

/* Alerts and Notices */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    border: 1px solid;
    font-size: 0.95rem;
    line-height: 1.45;
}

.alert-success {
    background-color: var(--status-success-bg);
    color: var(--status-success-text);
    border-color: var(--status-success-border);
}

.alert-danger {
    background-color: var(--status-danger-bg);
    color: var(--status-danger-text);
    border-color: var(--status-danger-border);
}

.alert-warning {
    background-color: var(--status-warning-bg);
    color: var(--status-warning-text);
    border-color: var(--status-warning-border);
}

.alert-info {
    background-color: var(--status-info-bg);
    color: var(--status-info-text);
    border-color: var(--status-info-border);
}

/* Cards & Panels */
.card {
    background-color: var(--surface-card);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.card-header {
    background-color: var(--surface-alt);
    border-bottom: 1px solid var(--border-soft);
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--green-deep);
    margin: 0;
}

.card-body {
    padding: 20px;
}

.card-footer {
    background-color: var(--surface-alt);
    border-top: 1px solid var(--border-soft);
    padding: 12px 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Dashboard Metric Cards Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.metric-card {
    background-color: var(--surface-card);
    border: 1px solid var(--border-soft);
    border-top: 4px solid var(--green-medium);
    border-radius: var(--radius-sm);
    padding: 18px 20px;
    box-shadow: var(--shadow-subtle);
}

.metric-card.accent-gold {
    border-top-color: var(--gold-accent);
}

.metric-card.accent-forest {
    border-top-color: var(--green-deep);
}

.metric-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 6px;
}

.metric-value {
    font-size: 2.1rem;
    font-weight: 800;
    color: var(--green-deep);
    line-height: 1.1;
    margin-bottom: 4px;
}

.metric-note {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* Grid Layouts */
.grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

@media (max-width: 900px) {
    .grid-2col {
        grid-template-columns: 1fr;
    }
}

/* Filter Bar */
.filter-bar {
    background-color: var(--surface-card);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin-bottom: 20px;
}

.filter-form {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: flex-end;
}

.filter-group {
    flex: 1 1 180px;
    display: flex;
    flex-direction: column;
}

.filter-group.action-group {
    flex: 0 0 auto;
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 18px;
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--green-deep);
}

.required-mark {
    color: var(--status-danger-text);
    margin-left: 2px;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
select,
textarea {
    width: 100%;
    min-height: 44px;
    padding: 8px 12px;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-primary);
    background-color: #FFFFFF;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

textarea {
    min-height: 100px;
    line-height: 1.4;
    resize: vertical;
}

/* Visible Focus States */
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
select:focus,
textarea:focus,
button:focus,
.btn:focus {
    outline: 2px solid var(--gold-accent);
    outline-offset: 1px;
    border-color: var(--green-medium);
}

.form-hint {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

/* Buttons (Strictly >= 44px height for touch/accessibility) */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--btn-min-height);
    padding: 0 20px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--green-medium);
    border-color: var(--green-medium);
    color: var(--text-light);
}

.btn-primary:hover {
    background-color: var(--green-medium-hover);
    border-color: var(--green-medium-hover);
    color: var(--text-light);
}

.btn-forest {
    background-color: var(--green-deep);
    border-color: var(--green-deep);
    color: var(--text-light);
}

.btn-forest:hover {
    background-color: var(--green-deep-hover);
    border-color: var(--green-deep-hover);
    color: var(--text-light);
}

.btn-secondary {
    background-color: #FFFFFF;
    border-color: var(--border-soft);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--surface-alt);
    border-color: var(--green-medium);
    color: var(--green-deep);
}

.btn-danger {
    background-color: var(--status-danger-text);
    border-color: var(--status-danger-text);
    color: var(--text-light);
}

.btn-danger:hover {
    background-color: #841515;
    border-color: #841515;
    color: var(--text-light);
}

.btn-sm {
    min-height: 36px;
    padding: 0 12px;
    font-size: 0.85rem;
}

.btn:disabled, .btn.disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

/* Institutional Tables */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
    background-color: var(--surface-card);
}

table.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.93rem;
}

table.data-table thead th {
    background-color: var(--green-medium);
    color: var(--text-light);
    font-weight: 700;
    padding: 12px 14px;
    border-bottom: 2px solid var(--green-deep);
    white-space: nowrap;
}

table.data-table tbody td {
    padding: 12px 14px;
    border-bottom: 1px solid #E5EBE1;
    color: var(--text-primary);
    vertical-align: middle;
}

table.data-table tbody tr:nth-child(even) {
    background-color: var(--surface-alt);
}

table.data-table tbody tr:hover {
    background-color: #ECF4E4;
}

/* Status Badges */
.badge {
    display: inline-block;
    padding: 3px 8px;
    font-size: 0.78rem;
    font-weight: 700;
    border-radius: 3px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border: 1px solid transparent;
}

.badge-active, .badge-approved, .badge-present {
    background-color: var(--status-success-bg);
    color: var(--status-success-text);
    border-color: var(--status-success-border);
}

.badge-pending, .badge-draft, .badge-for-approval {
    background-color: var(--status-warning-bg);
    color: var(--status-warning-text);
    border-color: var(--status-warning-border);
}

.badge-rejected, .badge-cancelled, .badge-absent {
    background-color: var(--status-danger-bg);
    color: var(--status-danger-text);
    border-color: var(--status-danger-border);
}

.badge-inactive, .badge-excused, .badge-completed {
    background-color: #F1F4EE;
    color: #495E4D;
    border-color: #CAD5C6;
}

.badge-ongoing {
    background-color: var(--status-info-bg);
    color: var(--status-info-text);
    border-color: var(--status-info-border);
}

/* Auth Pages Box (Login / Register) */
.auth-container {
    max-width: 480px;
    margin: 40px auto;
    background-color: var(--surface-card);
    border: 2px solid var(--border-soft);
    border-radius: var(--radius-md);
    padding: 32px 30px;
    box-shadow: 0 4px 14px rgba(35, 75, 42, 0.1);
}

.auth-header {
    text-align: center;
    border-bottom: 2px solid var(--border-soft);
    padding-bottom: 20px;
    margin-bottom: 24px;
}

.auth-header .inst-sub {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--green-medium);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}

.auth-header .inst-title {
    font-size: 1.35rem;
    color: var(--green-deep);
    margin: 0;
}

/* Arithmetic CAPTCHA Styling */
.captcha-container {
    background-color: #EBF3E3;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
    padding: 12px 14px;
    margin-bottom: 18px;
}

.captcha-label {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--green-deep);
    margin-bottom: 6px;
}

.captcha-equation {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--green-deep);
    letter-spacing: 0.1em;
    background: #FFFFFF;
    border: 1px solid var(--border-soft);
    padding: 6px 12px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 8px;
}

/* Footer */
.institutional-footer {
    background-color: var(--green-deep);
    color: #E2ECD8;
    padding: 24px 20px;
    margin-top: auto;
    border-top: 3px solid var(--gold-accent);
    font-size: 0.88rem;
}

.footer-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-text-meta {
    font-size: 0.8rem;
    color: #ADC2B0;
}

/* Chart Canvas Wrapper */
.chart-box {
    position: relative;
    height: 280px;
    width: 100%;
}

/* Action Button Group */
.table-actions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

/* Responsive Table: Converts to stacked card view on mobile */
@media (max-width: 768px) {
    .institutional-inner, .nav-container, .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .auth-user-badge {
        width: 100%;
        justify-content: space-between;
    }

    .table-responsive {
        border: none;
        background: transparent;
    }

    table.data-table,
    table.data-table thead,
    table.data-table tbody,
    table.data-table th,
    table.data-table td,
    table.data-table tr {
        display: block;
    }

    table.data-table thead tr {
        position: absolute;
        top: -9999px;
        left: -9999px;
    }

    table.data-table tr {
        background-color: var(--surface-card);
        border: 1px solid var(--border-soft);
        border-radius: var(--radius-sm);
        margin-bottom: 14px;
        padding: 8px 12px;
        box-shadow: var(--shadow-subtle);
    }

    table.data-table tbody td {
        border: none;
        border-bottom: 1px solid #EEF3E9;
        position: relative;
        padding-left: 45%;
        text-align: right;
        min-height: 38px;
    }

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

    table.data-table tbody td::before {
        content: attr(data-label);
        position: absolute;
        left: 12px;
        width: 40%;
        text-align: left;
        font-weight: 700;
        color: var(--green-deep);
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .table-actions {
        justify-content: flex-end;
    }
}