/*
 * AEDCA Design System
 * Base styles for aedca.org
 *
 * Color palette derived from existing AEDCA branding:
 *   Primary:   #4d4861 (dark purple-gray)
 *   Secondary: #605770 (medium purple-gray)
 *   Accent:    #9e7682 (mauve/rose)
 *   Light:     #f4f0f7 (lavender white)
 */

/* ===== CSS Custom Properties ===== */
:root {
    /* Colors — easy to swap for palette proposals */
    --color-primary: #4d4861;
    --color-primary-dark: #3a3650;
    --color-primary-light: #6b6480;
    --color-secondary: #605770;
    --color-accent: #9e7682;
    --color-accent-light: #c4a0ad;
    --color-accent-hover: #b38a96;

    --color-bg: #faf8fc;
    --color-bg-alt: #f4f0f7;
    --color-bg-card: #ffffff;
    --color-surface: #ffffff;

    --color-text: #2d2a33;
    --color-text-secondary: #6b6480;
    --color-text-muted: #8e889c;
    --color-text-on-dark: #f4f0f7;
    --color-text-on-accent: #ffffff;

    --color-border: #e4dfe9;
    --color-border-light: #ede9f2;

    --color-success: #4a8c5c;
    --color-warning: #c4943a;
    --color-error: #b84a4a;

    /* Typography */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Layout */
    --max-width: 1200px;
    --header-height: 64px;

    /* Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(77, 72, 97, 0.08);
    --shadow-md: 0 4px 12px rgba(77, 72, 97, 0.12);
    --shadow-lg: 0 8px 24px rgba(77, 72, 97, 0.16);
    --shadow-nav: 0 2px 8px rgba(77, 72, 97, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-primary);
    line-height: 1.3;
    margin-bottom: var(--space-md);
}
h1 { font-size: var(--text-4xl); font-weight: 700; }
h2 { font-size: var(--text-3xl); font-weight: 600; }
h3 { font-size: var(--text-2xl); font-weight: 600; }
h4 { font-size: var(--text-xl); font-weight: 500; }

p { margin-bottom: var(--space-md); }

ul, ol {
    margin-bottom: var(--space-md);
    padding-left: var(--space-xl);
}
li { margin-bottom: var(--space-xs); }

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--space-lg);
}
th, td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}
th {
    background-color: var(--color-primary);
    color: var(--color-text-on-dark);
    font-weight: 600;
}
tr:nth-child(even) {
    background-color: var(--color-bg-alt);
}
tr:hover {
    background-color: var(--color-border-light);
}

hr {
    border: none;
    height: 1px;
    background: var(--color-border);
    margin: var(--space-xl) 0;
}

/* ===== Header & Navigation ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-primary);
    box-shadow: var(--shadow-nav);
    height: var(--header-height);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.logo-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--color-text-on-dark);
    flex-shrink: 0;
}
.logo-link:hover {
    text-decoration: none;
    color: var(--color-accent-light);
}
.logo-img {
    height: 40px;
    width: auto;
}
.logo-text {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* Main Nav */
.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-list {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: var(--space-md) var(--space-md);
    color: var(--color-text-on-dark);
    font-size: var(--text-sm);
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}
.nav-link:hover,
.nav-item.active > .nav-link {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-accent-light);
    text-decoration: none;
}

/* Dropdown */
.nav-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--color-surface);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    box-shadow: var(--shadow-lg);
    list-style: none;
    padding: var(--space-xs) 0;
    z-index: 1001;
}

.nav-item.has-children:hover > .nav-dropdown,
.nav-item.has-children.open > .nav-dropdown {
    display: block;
}

.dropdown-link {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    color: var(--color-text);
    font-size: var(--text-sm);
    text-decoration: none;
    transition: background-color var(--transition-fast);
}
.dropdown-link:hover,
.dropdown-link.active {
    background-color: var(--color-bg-alt);
    color: var(--color-accent);
    text-decoration: none;
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    z-index: 1002;
}
.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-on-dark);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav-toggle.active .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 500;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}
.btn:hover { text-decoration: none; }

.btn-primary {
    background: var(--color-accent);
    color: var(--color-text-on-accent);
}
.btn-primary:hover {
    background: var(--color-accent-hover);
    color: var(--color-text-on-accent);
}

.btn-login, .btn-logout {
    background: rgba(255, 255, 255, 0.15);
    color: var(--color-text-on-dark);
    font-size: var(--text-xs);
}
.btn-login:hover, .btn-logout:hover {
    background: rgba(255, 255, 255, 0.25);
    color: var(--color-text-on-dark);
}

.btn-upload {
    background: var(--color-accent);
    color: var(--color-text-on-accent);
    font-size: var(--text-xs);
}
.btn-upload:hover {
    background: var(--color-accent-hover);
}

.btn-sm {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--text-xs);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    height: 50vh;
    min-height: 320px;
    max-height: 500px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-gallery {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--color-primary);
    background-size: cover;
    background-position: center;
    transition: background-image 1.5s ease-in-out;
}

.hero-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(
        135deg,
        rgba(77, 72, 97, 0.85) 0%,
        rgba(96, 87, 112, 0.7) 50%,
        rgba(158, 118, 130, 0.6) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--space-xl);
    max-width: 700px;
}

.hero-presented {
    font-size: var(--text-sm);
    color: var(--color-accent-light);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--space-sm);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    color: #ffffff;
    margin-bottom: var(--space-sm);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--color-accent-light);
    margin-bottom: var(--space-md);
}

.hero-badge {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    color: #ffffff;
    font-size: var(--text-sm);
    backdrop-filter: blur(4px);
}

/* ===== Page Content ===== */
.site-main {
    flex: 1;
}

.page-content {
    padding: var(--space-3xl) var(--space-lg);
}

.content-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.page-title {
    text-align: center;
    margin-bottom: var(--space-2xl);
    position: relative;
}
.page-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--color-accent);
    margin: var(--space-md) auto 0;
    border-radius: 2px;
}

.page-body {
    max-width: 800px;
    margin: 0 auto;
}

.page-body a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.page-body a:hover {
    color: var(--color-accent-hover);
}

/* ===== Members Badge ===== */
.members-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-primary);
    color: var(--color-text-on-dark);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: var(--space-lg);
}

/* ===== Cards ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.card {
    display: block;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    text-decoration: none;
    color: var(--color-text);
}
.card:hover {
    text-decoration: none;
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent-light);
    transform: translateY(-2px);
}
.card h3 {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}
.card p {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    margin-bottom: 0;
}

/* ===== Quick Links ===== */
.quick-links {
    margin-top: var(--space-3xl);
}
.quick-links h2 {
    text-align: center;
}

/* ===== Schedule (Annual) ===== */
.schedule-section { margin-bottom: var(--space-3xl); }

.schedule-block {
    margin-bottom: var(--space-2xl);
    border-left: 3px solid var(--color-accent);
    padding-left: var(--space-lg);
}

.schedule-date {
    color: var(--color-accent);
    font-family: var(--font-body);
    font-weight: 600;
}

.schedule-event {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

.event-name {
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.event-venue {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-sm);
}

.event-docs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.doc-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    color: var(--color-accent);
}
.doc-link:hover {
    background: var(--color-accent);
    color: var(--color-text-on-accent);
    text-decoration: none;
}

.event-notes {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
}

/* ===== Documents Grid ===== */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-md);
}

.doc-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: all var(--transition-fast);
}
.doc-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
}
.doc-card svg {
    flex-shrink: 0;
    color: var(--color-accent);
}

/* ===== Footer ===== */
.site-footer {
    background: var(--color-primary);
    color: var(--color-text-on-dark);
    padding: var(--space-2xl) var(--space-lg);
    margin-top: auto;
}

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

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}
.footer-name {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: var(--text-lg);
}
.footer-tagline {
    font-size: var(--text-sm);
    color: var(--color-accent-light);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}
.footer-links a {
    color: var(--color-accent-light);
    font-size: var(--text-sm);
}
.footer-links a:hover {
    color: #ffffff;
}

.footer-meta {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    max-width: 480px;
    width: 90%;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: none;
    border: none;
    font-size: var(--text-2xl);
    color: var(--color-text-muted);
    cursor: pointer;
    line-height: 1;
}
.modal-close:hover {
    color: var(--color-text);
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-2xl);
    text-align: center;
    cursor: pointer;
    transition: border-color var(--transition-fast), background var(--transition-fast);
    margin: var(--space-lg) 0;
}
.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--color-accent);
    background: var(--color-bg-alt);
}
.upload-zone svg {
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}
.upload-hint {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.upload-preview {
    text-align: center;
    margin: var(--space-lg) 0;
}
.upload-preview img {
    max-height: 200px;
    margin: 0 auto var(--space-md);
    border-radius: var(--radius-md);
}

.upload-status {
    font-size: var(--text-sm);
    margin-top: var(--space-md);
    text-align: center;
}

/* ===== Coming Soon ===== */
.coming-soon-section {
    text-align: center;
    padding: var(--space-3xl) 0;
}

/* ===== Responsive ===== */

/* Tablet */
@media (max-width: 1024px) {
    .nav-link {
        padding: var(--space-md) var(--space-sm);
        font-size: var(--text-xs);
    }
    .hero-title {
        font-size: var(--text-3xl);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }

    .nav-toggle {
        display: flex;
    }

    .main-nav {
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0; right: 0; bottom: 0;
        background: var(--color-primary);
        padding: var(--space-lg);
        overflow-y: auto;
    }
    .main-nav.open {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
    }

    .nav-link {
        padding: var(--space-md);
        font-size: var(--text-base);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-dropdown {
        position: static;
        box-shadow: none;
        background: rgba(0, 0, 0, 0.1);
        border-radius: 0;
    }
    .nav-item.has-children.open > .nav-dropdown {
        display: block;
    }

    .dropdown-link {
        color: var(--color-text-on-dark);
        padding: var(--space-sm) var(--space-2xl);
    }
    .dropdown-link:hover {
        background: rgba(255, 255, 255, 0.1);
        color: var(--color-accent-light);
    }

    .header-actions .btn-label {
        display: none;
    }

    .hero {
        min-height: 260px;
        max-height: 360px;
    }
    .hero-title {
        font-size: var(--text-2xl);
    }
    .hero-subtitle {
        font-size: var(--text-base);
    }

    .page-content {
        padding: var(--space-2xl) var(--space-md);
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }
}

/* Print */
@media print {
    .site-header,
    .site-footer,
    .btn-upload,
    .modal-overlay,
    .nav-toggle {
        display: none !important;
    }
    .page-content {
        padding: 0;
    }
    body {
        font-size: 12pt;
        color: #000;
        background: #fff;
    }
    a { color: #000; text-decoration: underline; }
    a::after { content: " (" attr(href) ")"; font-size: 10pt; }
}