/* ==========================================================================
   SBO FOUNDATION - MASTER DESIGN SYSTEM & BRAND STYLESHEET
   Concept: Imperial Emerald & Warm Alabaster
   Refined luxury editorial non-profit identity
   ========================================================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400;1,600&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400;1,600&display=swap');

:root {
    /* Color Palette */
    --color-imperial-dark: #041E13;
    --color-imperial: #093322;
    --color-primary: #0F5235;
    --color-primary-light: #18724B;
    --color-gold: #C5A059;
    --color-gold-dark: #9A7734;
    --color-gold-light: #E8D3A7;
    --color-gold-cream: #FAF5E9;
    --color-alabaster: #FAF9F6;
    --color-surface-white: #FFFFFF;
    --color-surface-subtle: #F3F1EC;
    --color-dark-charcoal: #121614;
    --color-text-main: #2A302D;
    --color-text-muted: #5E6662;
    --color-text-light: #8A9490;
    --color-border-subtle: rgba(197, 160, 89, 0.18);
    --color-border-strong: rgba(15, 82, 53, 0.15);
    
    /* Functional Colors */
    --color-success: #10B981;
    --color-error: #EF4444;
    
    /* Typography System */
    --font-serif: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Spacing Scale */
    --space-xs: 0.25rem;  /* 4px */
    --space-sm: 0.5rem;   /* 8px */
    --space-md: 1rem;     /* 16px */
    --space-lg: 1.5rem;   /* 24px */
    --space-xl: 2.5rem;   /* 40px */
    --space-2xl: 4rem;    /* 64px */
    --space-3xl: 6rem;    /* 96px */
    
    /* Border Radii */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    
    /* Elevation Shadows */
    --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.03);
    --shadow-card: 0 10px 30px -5px rgba(9, 51, 34, 0.07), 0 4px 12px -2px rgba(0, 0, 0, 0.03);
    --shadow-hover: 0 20px 40px -10px rgba(9, 51, 34, 0.15), 0 8px 20px -4px rgba(0, 0, 0, 0.06);
    --shadow-modal: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Glassmorphism */
    --glass-bg: rgba(250, 249, 246, 0.88);
    --glass-border: 1px solid rgba(197, 160, 89, 0.22);
    --glass-backdrop: blur(16px);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
    font-family: var(--font-sans);
    line-height: 1.7;
    color: var(--color-text-main);
    background-color: var(--color-alabaster);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography Headings */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    color: var(--color-imperial);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.5rem, 5.5vw, 4.25rem); }
h2 { font-size: clamp(2rem, 3.8vw, 3rem); }
h3 { font-size: clamp(1.4rem, 2.2vw, 1.85rem); }
h4 { font-size: clamp(1.15rem, 1.5vw, 1.35rem); }

p {
    font-size: 1.05rem;
    color: var(--color-text-muted);
}

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

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

/* Container */
.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Section Common Styling */
section {
    position: relative;
}

.section-padding {
    padding: var(--space-3xl) 0;
}

.section-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto var(--space-2xl);
}

.section-tagline {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-gold-dark);
    margin-bottom: var(--space-xs);
    position: relative;
}

.section-title {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    margin-bottom: var(--space-md);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-gold), transparent);
    margin: var(--space-sm) auto 0;
    border-radius: var(--radius-full);
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-text-muted);
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    -webkit-backdrop-filter: var(--glass-backdrop);
    border-bottom: var(--glass-border);
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    background: rgba(250, 249, 246, 0.96);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-image {
    height: 48px;
    width: auto;
    object-fit: contain;
    transition: var(--transition-fast);
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-imperial);
    letter-spacing: -0.02em;
}

.logo-text span {
    color: var(--color-gold-dark);
    font-weight: 400;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.nav-link {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-main);
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-gold);
    transition: width var(--transition-smooth);
    border-radius: var(--radius-full);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-btn-donate {
    padding: 0.6rem 1.4rem;
    background: var(--color-primary);
    color: var(--color-surface-white) !important;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(15, 82, 53, 0.2);
    transition: var(--transition-bounce);
}

.nav-btn-donate:hover {
    background: var(--color-imperial);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(15, 82, 53, 0.3);
}

.nav-btn-donate::after {
    display: none;
}

/* Mobile Toggle Hamburger */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    cursor: pointer;
    background: transparent;
    border: none;
    z-index: 1001;
}

.bar {
    width: 26px;
    height: 2px;
    background: var(--color-imperial);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

/* Global Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 0.85rem 1.85rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    text-align: center;
    transition: var(--transition-smooth);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-surface-white);
    border-color: var(--color-primary);
    box-shadow: 0 4px 14px rgba(15, 82, 53, 0.25);
}

.btn-primary:hover {
    background: var(--color-imperial);
    border-color: var(--color-imperial);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(9, 51, 34, 0.35);
}

.btn-secondary {
    background: var(--color-gold);
    color: var(--color-imperial-dark);
    border-color: var(--color-gold);
    box-shadow: 0 4px 14px rgba(197, 160, 89, 0.3);
}

.btn-secondary:hover {
    background: var(--color-gold-dark);
    color: var(--color-surface-white);
    border-color: var(--color-gold-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(154, 119, 52, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-border-strong);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-surface-white);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.btn-light {
    background: var(--color-surface-white);
    color: var(--color-imperial);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.btn-light:hover {
    background: var(--color-gold-cream);
    color: var(--color-imperial-dark);
    transform: translateY(-2px);
}

.btn-icon {
    width: 18px;
    height: 18px;
    stroke-width: 2;
    fill: none;
    stroke: currentColor;
}

/* Page Banner / Header */
.page-header {
    padding: 140px 0 70px;
    background: linear-gradient(135deg, var(--color-imperial-dark) 0%, var(--color-imperial) 100%);
    color: var(--color-surface-white);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 80% 20%, rgba(197, 160, 89, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.page-header-content {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

.page-title {
    color: var(--color-surface-white);
    margin-bottom: var(--space-sm);
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--color-gold-light);
    font-family: var(--font-sans);
    font-weight: 400;
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a {
    color: var(--color-gold-light);
}

.breadcrumb a:hover {
    color: var(--color-surface-white);
}

.breadcrumb-sep {
    font-size: 0.8rem;
}

/* Card Components */
.card-base {
    background: var(--color-surface-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-card);
    transition: var(--transition-smooth);
}

.card-base:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(197, 160, 89, 0.4);
}

/* SVG Icon Badge */
.icon-badge {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--color-gold-cream);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(197, 160, 89, 0.25);
    transition: var(--transition-bounce);
}

.card-base:hover .icon-badge {
    background: var(--color-primary);
    color: var(--color-gold);
    transform: scale(1.08);
}

.icon-badge svg {
    width: 28px;
    height: 28px;
    stroke-width: 1.75;
    fill: none;
    stroke: currentColor;
}

/* Global Footer */
.footer {
    background: var(--color-imperial-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--space-3xl) 0 var(--space-lg);
    position: relative;
    border-top: 1px solid rgba(197, 160, 89, 0.2);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand h3 {
    color: var(--color-surface-white);
    font-size: 1.8rem;
    margin-bottom: var(--space-xs);
}

.footer-brand p {
    color: var(--color-gold-light);
    font-size: 0.95rem;
    margin-bottom: var(--space-md);
}

.footer-desc {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-section h4 {
    color: var(--color-gold);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-lg);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-gold-light);
    padding-left: 4px;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.social-link {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.social-link.disabled {
    cursor: default;
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
    color: var(--color-gold-light);
}

.footer-bottom a:hover {
    color: var(--color-surface-white);
    text-decoration: underline;
}

/* Scroll To Top */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: var(--color-gold);
    border: 1px solid var(--color-gold);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition-smooth);
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    background: var(--color-imperial);
    transform: translateY(-4px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
}

.scroll-to-top svg {
    width: 22px;
    height: 22px;
    stroke-width: 2.5;
    fill: none;
    stroke: currentColor;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--color-imperial-dark);
    color: var(--color-surface-white);
    padding: 1rem 1.75rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-gold);
    box-shadow: var(--shadow-modal);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    font-weight: 500;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-bounce);
    z-index: 2000;
}

.toast-container.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

/* Modal Overlay Base */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(4, 30, 19, 0.75);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    z-index: 1050;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--color-surface-white);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    padding: var(--space-2xl);
    position: relative;
    border: 1px solid var(--color-border-subtle);
    box-shadow: var(--shadow-modal);
    transform: scale(0.95);
    transition: var(--transition-smooth);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--color-surface-subtle);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--color-text-muted);
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-primary);
    color: var(--color-surface-white);
}

/* Form Controls */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-imperial);
    margin-bottom: 0.4rem;
}

.form-control {
    width: 100%;
    padding: 0.85rem 1.1rem;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    background: var(--color-alabaster);
    border: 1px solid rgba(15, 82, 53, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-text-main);
    outline: none;
    transition: var(--transition-fast);
}

.form-control:focus {
    border-color: var(--color-primary);
    background: var(--color-surface-white);
    box-shadow: 0 0 0 4px rgba(15, 82, 53, 0.1);
}

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

/* Responsiveness */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xl);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--color-alabaster);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--space-2xl) var(--space-lg);
        gap: 1.5rem;
        transition: var(--transition-smooth);
        border-top: 1px solid var(--color-border-subtle);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    
    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 380px) {
    .container {
        padding: 0 0.75rem;
    }

    html {
        font-size: 15px;
    }
}