/* ============================================
   Don Bosco Reunion 2026 - Main Styles
   Golden Jubilee Design System
   ============================================ */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=DM+Sans:wght@400;500;600;700&display=swap');

/* ============================================
   CSS Custom Properties (Design System)
   ============================================ */

:root {
    /* Color Palette - Golden Jubilee */
    --color-navy:       #1A2744;
    --color-gold:       #C9A84C;
    --color-gold-light: #E8D5A3;
    --color-cream:      #FAF7F0;
    --color-charcoal:   #2D2D2D;
    --color-muted:      #7A7A7A;
    --color-border:     #E2DDD4;
    --color-white:      #FFFFFF;
    --color-success:    #2E7D32;
    --color-error:      #C62828;
    
    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'DM Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(26, 39, 68, 0.06);
    --shadow-md: 0 2px 20px rgba(26, 39, 68, 0.08);
    --shadow-lg: 0 4px 30px rgba(26, 39, 68, 0.12);
    --shadow-hover: 0 6px 40px rgba(26, 39, 68, 0.15);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.35s ease;
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-charcoal);
    background-color: var(--color-cream);
    min-height: 100vh;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-gold);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-navy);
}

strong, b {
    font-weight: 600;
}

em, i {
    font-style: italic;
}

/* ============================================
   Container & Layout
   ============================================ */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

.section {
    padding: var(--spacing-xxl) 0;
}

.section-sm {
    padding: var(--spacing-xl) 0;
}

.section-lg {
    padding: calc(var(--spacing-xxl) * 1.5) 0;
}

/* ============================================
   Navigation
   ============================================ */

.nav {
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    position: relative;
    padding: var(--spacing-sm) var(--container-padding);
}

.nav-brand {
    display: inline-flex;
    align-items: center;
    flex: 0 1 auto;
    min-width: 0;
}

.nav-brand-image {
    display: block;
    width: min(100%, 360px);
    height: auto;
    max-height: 64px;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    justify-content: flex-end;
}

.nav-toggle {
    display: none;
    width: 48px;
    height: 48px;
    padding: 0;
    border: 1px solid rgba(201, 168, 76, 0.35);
    border-radius: 14px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(250, 247, 240, 0.98) 100%);
    box-shadow: var(--shadow-sm);
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    transition: all var(--transition-base);
}

.nav-toggle:hover {
    border-color: var(--color-gold);
    transform: translateY(-1px);
}

.nav-toggle-bar {
    display: block;
    width: 20px;
    height: 2px;
    border-radius: 999px;
    background: var(--color-navy);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.nav-link {
    color: var(--color-charcoal);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-gold);
    border-bottom-color: var(--color-gold);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-navy);
    color: var(--color-white);
    border-color: var(--color-navy);
}

.btn-primary:hover {
    background-color: var(--color-gold);
    border-color: var(--color-gold);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-gold);
    border-color: var(--color-gold);
}

.btn-secondary:hover {
    background-color: var(--color-gold);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

.btn-small {
    padding: 0.625rem 1.5rem;
    font-size: 0.875rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ============================================
   Form Elements
   ============================================ */

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9375rem;
}

.form-label-required::after {
    content: ' *';
    color: var(--color-error);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    font-family: var(--font-body);
    font-size: 1rem;
    padding: 0.875rem 1rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-white);
    color: var(--color-charcoal);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.1);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-error {
    color: var(--color-error);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: none;
}

.form-group.error .form-error {
    display: block;
}

.form-group.error .form-input,
.form-group.error .form-textarea,
.form-group.error .form-select {
    border-color: var(--color-error);
}

.form-help {
    font-size: 0.875rem;
    color: var(--color-muted);
    margin-top: var(--spacing-xs);
}

/* ============================================
   Cards
   ============================================ */

.card {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.card-body {
    padding: var(--spacing-md);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.card:hover .card-title {
    color: var(--color-gold);
}

.card-text {
    color: var(--color-muted);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background-color: var(--color-navy);
    color: var(--color-cream);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xxl);
}

.footer-content {
    text-align: center;
}

.footer-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--color-gold);
    margin-bottom: var(--spacing-sm);
}

.footer-text {
    color: var(--color-cream);
    opacity: 0.9;
    margin-bottom: var(--spacing-md);
}

.footer-divider {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin: var(--spacing-lg) 0;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-copyright {
    flex: 1;
}

/* ============================================
   Utility Classes
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-navy { color: var(--color-navy); }
.text-gold { color: var(--color-gold); }
.text-muted { color: var(--color-muted); }
.text-white { color: var(--color-white); }

.bg-navy { background-color: var(--color-navy); }
.bg-gold { background-color: var(--color-gold); }
.bg-cream { background-color: var(--color-cream); }
.bg-white { background-color: var(--color-white); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }

.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }

.d-none { display: none; }
.d-block { display: block; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* ============================================
   Decorative Elements
   ============================================ */

.gold-rule {
    border: none;
    border-top: 1px solid var(--color-gold);
    max-width: 100px;
    margin: var(--spacing-md) auto;
}

.badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    background-color: var(--color-gold-light);
    color: var(--color-navy);
}

.badge-featured {
    background-color: var(--color-gold);
    color: var(--color-white);
}

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

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }

    .nav-container {
        gap: 0.75rem;
        align-items: center;
    }

    .nav-brand-image {
        width: min(100%, 240px);
        max-height: 44px;
    }

    .nav-toggle {
        display: inline-flex;
        flex-shrink: 0;
    }
    
    .nav-menu {
        position: absolute;
        top: calc(100% - 0.15rem);
        right: var(--container-padding);
        left: auto;
        min-width: 220px;
        padding: 0.75rem;
        background: linear-gradient(180deg, rgba(255, 255, 255, 0.99) 0%, rgba(250, 247, 240, 0.99) 100%);
        border: 1px solid rgba(201, 168, 76, 0.3);
        border-radius: 18px;
        box-shadow: 0 18px 38px rgba(26, 39, 68, 0.14);
        flex-direction: column;
        gap: 0.25rem;
        align-items: stretch;
        justify-content: flex-start;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(-8px);
        transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
        z-index: 120;
    }

    .nav-menu.is-open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }

    .nav-menu li {
        width: 100%;
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: 0.8rem 0.9rem;
        border-bottom: none;
        border-radius: 12px;
    }

    .nav-link:hover,
    .nav-link.active {
        background: rgba(201, 168, 76, 0.14);
        color: var(--color-navy);
        border-bottom-color: transparent;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .nav-container {
        align-items: center;
    }

    .nav-brand-image {
        width: min(100%, 180px);
        max-height: 36px;
    }

    .nav-toggle {
        width: 44px;
        height: 44px;
    }

    .nav-menu {
        right: 0.75rem;
        left: 0.75rem;
        min-width: 0;
    }
}

/* ============================================
   Premium Animations
   ============================================ */

/* Page Load Fade In */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Slide In Animations */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scale & Fade */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Pulse Animation */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Shimmer Effect for Loading */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

/* Animation Classes */
.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in-down {
    animation: fadeInDown 0.6s ease-out;
}

.animate-slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

.animate-slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

.animate-scale-in {
    animation: scaleIn 0.5s ease-out;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Stagger Delays for Multiple Elements */
.animate-delay-100 { animation-delay: 0.1s; }
.animate-delay-200 { animation-delay: 0.2s; }
.animate-delay-300 { animation-delay: 0.3s; }
.animate-delay-400 { animation-delay: 0.4s; }
.animate-delay-500 { animation-delay: 0.5s; }
.animate-delay-600 { animation-delay: 0.6s; }

/* Hover Animations */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.hover-scale {
    transition: transform var(--transition-base);
}

.hover-scale:hover {
    transform: scale(1.05);
}

/* Smooth Color Transitions */
.transition-colors {
    transition: color var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
}

/* Loading Shimmer */
.skeleton-loader {
    background: linear-gradient(
        90deg,
        var(--color-border) 0%,
        var(--color-cream) 50%,
        var(--color-border) 100%
    );
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/* Fade In on Scroll (requires JS) */
.fade-in-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth Page Transitions */
.page-transition {
    animation: fadeIn 0.4s ease-out;
}

/* ============================================
   Loading Spinner States
   ============================================ */

/* Spinner Animation */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes spinFade {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-gold {
    border: 2.5px solid rgba(201, 168, 76, 0.2);
    border-top-color: var(--color-gold);
}

.spinner-navy {
    border: 2.5px solid rgba(26, 39, 68, 0.2);
    border-top-color: var(--color-navy);
}

.spinner-lg {
    width: 32px;
    height: 32px;
    border-width: 3px;
}

.spinner-xl {
    width: 48px;
    height: 48px;
    border-width: 4px;
}

/* Loading State for Buttons */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
    cursor: not-allowed;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    top: 50%;
    left: 50%;
    margin-left: -9px;
    margin-top: -9px;
    border: 2.5px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.btn-secondary.loading::after {
    border: 2.5px solid rgba(201, 168, 76, 0.2);
    border-top-color: var(--color-gold);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 39, 68, 0.85);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.loading-overlay .spinner {
    width: 48px;
    height: 48px;
    border-width: 4px;
    margin-bottom: var(--spacing-md);
}

.loading-overlay-text {
    color: var(--color-white);
    font-size: 1.125rem;
    font-weight: 500;
    margin-top: var(--spacing-md);
    animation: spinFade 1.5s ease-in-out infinite;
}

/* Loading Dots Animation */
.loading-dots::after {
    content: '...';
    display: inline-block;
    animation: loadingDots 1.5s steps(4, end) infinite;
}

@keyframes loadingDots {
    0%, 20% {
        content: '.';
    }
    40% {
        content: '..';
    }
    60%, 100% {
        content: '...';
    }
}

/* Skeleton Loader for Cards */
.member-card.loading {
    pointer-events: none;
}

.member-card.loading .member-card-image,
.member-card.loading .member-card-name,
.member-card.loading .member-card-position,
.member-card.loading .member-card-location {
    background: linear-gradient(
        90deg,
        var(--color-border) 0%,
        var(--color-cream) 50%,
        var(--color-border) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    color: transparent;
}

/* Inline Loading Indicator */
.inline-spinner {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.inline-spinner .spinner {
    width: 16px;
    height: 16px;
    border-width: 2px;
}

/* Processing State */
.processing {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.processing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.5);
    z-index: 1;
}

/* Accessibility: Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    .spinner,
    .btn.loading::after {
        animation: spinFade 1.5s ease-in-out infinite;
    }
}