/* ==========================================================================
   HUBA EAR CARE FOUNDATION - SYSTEM STYLESHEET
   Stack: Pure Vanilla CSS3 (Custom Properties, Flexbox & CSS Grid)
   ========================================================================== */

/* 1. GLOBAL VARIABLES & BRAND PALETTE */
:root {
    --primary: #0d9488;          /* Warm Emerald/Teal Primary */
    --primary-hover: #0f766e;
    --primary-light: #ccfbf1;
    --secondary: #0f172a;        /* Deep Slate Blue */
    --accent: #2563eb;           /* Royal Blue */
    
    --bg-main: #f8fafc;          /* Cool grey background */
    --surface-card: #ffffff;    /* White containers */
    --border-color: #e2e8f0;    /* Subtle dividers */
    --border-focus: #0d9488;
    
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.02);
    --shadow-lg: 0 20px 30px -10px rgba(15, 23, 42, 0.12);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. BASE RESET */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    overflow-x: hidden;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-stack);
    background-color: var(--bg-main);
    color: var(--text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

.container {
    width: 92%;
    max-width: 1140px;
    margin: 0 auto;
}

.text-center { text-align: center; }
.eyebrow {
    text-transform: uppercase;
    font-size: 0.8rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

/* 3. SITE HEADER & NAVIGATION */
.site-header {
    background-color: var(--surface-card);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-flex {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.85rem 0;
}

.logo a {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--secondary);
    text-decoration: none;
    line-height: 1.2;
}

.logo .light-text {
    font-weight: 400;
    color: var(--text-muted);
}

.main-nav {
    position: relative;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: 1.25rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.main-nav li {
    margin: 0;
}

.main-nav a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 700;
    padding: 0.45rem 0.25rem;
    transition: var(--transition);
    font-size: 0.95rem;
}

.main-nav a:hover,
.main-nav a:focus {
    color: var(--primary);
}

.main-nav .nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary);
    color: #ffffff !important;
    border-radius: 999px;
    padding: 0.55rem 1.2rem;
}

.main-nav .nav-cta:hover,
.main-nav .nav-cta:focus {
    background-color: var(--primary-hover);
}

/* HAMBURGER TOGGLE BUTTON */
.nav-toggle {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    flex-direction: column;
    justify-content: space-between;
    width: 2.25rem;
    height: 2rem;
    z-index: 110;
}

.hamburger-bar {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--secondary);
    border-radius: 3px;
    transition: var(--transition);
}

.nav-toggle.active .hamburger-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.nav-toggle.active .hamburger-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* 4. HERO SECTION (Mint Gradient) */
.hero-section {
    padding: 3.5rem 0;
    background: linear-gradient(135deg, #ffffff 0%, #e6f4f1 100%);
    border-bottom: 1px solid var(--border-color);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 2.5rem;
    align-items: center;
}

.badge {
    display: inline-block;
    background-color: var(--primary-light);
    color: var(--primary-hover);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 0.35rem 0.85rem;
    border-radius: 50px;
    margin-bottom: 0.75rem;
}

.hero-text h1 {
    font-size: 2.5rem;
    line-height: 1.2;
    color: var(--secondary);
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
}

.hero-text p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.hero-cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.6rem;
    font-weight: 700;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: var(--transition);
    text-align: center;
    min-height: 44px;
}

.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.25);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary-light);
}

.hero-img-card {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: block;
    object-fit: cover;
}

/* 5. DARK SLATE TRUST BAR */
.trust-bar {
    background-color: var(--secondary);
    color: #ffffff;
    padding: 1.25rem 0;
}

.trust-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.9rem;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.trust-label {
    color: #94a3b8;
}

/* 6. MISSION & VISION SECTION (3-Column Grid) */
.mission-section {
    padding: 4rem 0;
}

.section-title {
    max-width: 720px;
    margin: 0 auto 2.5rem auto;
}

.section-title h2 {
    font-size: 2.1rem;
    color: var(--secondary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.05rem;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.mission-card {
    background: var(--surface-card);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.icon-box {
    font-size: 2.2rem;
    margin-bottom: 1rem;
}

.mission-card h3 {
    font-size: 1.25rem;
    color: var(--secondary);
    margin-bottom: 0.75rem;
}

.mission-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* 7. CORE OPERATIONAL PROGRAMS (2x2 Grid) */
.programs-section {
    padding: 4rem 0;
    background-color: #f1f5f9;
}

.program-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.program-card {
    background: var(--surface-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.program-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.card-img-wrapper {
    position: relative;
    height: 220px;
    background-color: #cbd5e1;
}

.card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background-color: rgba(15, 23, 42, 0.85);
    color: #ffffff;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    backdrop-filter: blur(4px);
}

.card-content {
    padding: 1.75rem;
}

.card-content h3 {
    font-size: 1.3rem;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.card-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
}

.card-link {
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
    display: inline-block;
    padding: 0.25rem 0;
}

.card-link:hover {
    color: var(--primary-hover);
}

/* 8. DEEP TEAL CTA BANNER */
.cta-banner-section {
    padding: 2rem 0 4rem 0;
}

.cta-banner-card {
    background: linear-gradient(135deg, var(--primary) 0%, #0f766e 100%);
    color: #ffffff;
    padding: 3rem;
    border-radius: var(--radius-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    box-shadow: var(--shadow-lg);
}

.cta-content h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.cta-content p {
    font-size: 1.05rem;
    opacity: 0.9;
    max-width: 600px;
}

.cta-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn-light {
    background-color: #ffffff;
    color: var(--primary);
}

.btn-light:hover {
    background-color: #f8fafc;
}

.btn-outline-light {
    border: 2px solid #ffffff;
    color: #ffffff;
}

.btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.15);
}

/* 9. PAGE SHELL & INNER PAGES */
.page-shell {
    padding: 2.5rem 0 4rem;
}

.hero-card {
    display: grid;
    grid-template-columns: 1.3fr 0.9fr;
    gap: 2rem;
    align-items: center;
    background: var(--surface-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.hero-card .badge {
    margin-bottom: 1rem;
}

.hero-card h1 {
    font-size: 2.4rem;
    line-height: 1.15;
    margin-bottom: 1rem;
}

.hero-card p {
    color: var(--text-muted);
    font-size: 1rem;
}

.fc-hero-writeup {
    max-width: 40rem;
}

.fc-hero-writeup p {
    margin: 0 0 0.9rem;
    line-height: 1.75;
    text-align: justify;
    text-wrap: pretty;
}

.fc-hero-writeup .fc-hero-lead {
    color: var(--secondary);
    font-size: 1.15rem;
    font-weight: 800;
    line-height: 1.35;
    text-align: left;
    margin-bottom: 0.45rem;
}

.fc-hero-writeup .fc-hero-tagline {
    color: var(--primary-hover);
    font-size: 1.05rem;
    font-weight: 800;
    line-height: 1.45;
    text-align: left;
    margin-bottom: 1.15rem;
}

.fc-hero-writeup p:last-child {
    color: var(--secondary);
    font-weight: 700;
    margin-bottom: 0;
}

.fc-page {
    padding-bottom: 0;
}

.fc-page .cta-banner-section {
    padding-bottom: 1rem;
}

.fc-page + .site-footer {
    margin-top: 1rem !important;
}

.content-grid {
    display: grid;
    grid-template-columns: 1.7fr 1fr;
    gap: 2rem;
    align-items: flex-start;
    margin: 2rem 0;
}

.info-panel {
    background: var(--surface-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.contact-card {
    background: var(--surface-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 1.25rem;
}

.contact-item {
    margin-bottom: 1rem;
}

.contact-label {
    font-weight: 700;
    color: var(--secondary);
    display: block;
    margin-bottom: 0.2rem;
}

.contact-value a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    word-break: break-word;
}

.donation-form,
.contact-form {
    background: var(--surface-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.field-group {
    margin-bottom: 1.25rem;
}

.field-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--secondary);
}

.field-group input,
.field-group textarea,
.field-group select {
    width: 100%;
    padding: 0.85rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
    background-color: #ffffff;
    min-height: 44px;
}

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

.field-group input:focus,
.field-group textarea:focus,
.field-group select:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 4px rgba(13, 148, 136, 0.12);
}

.field-inline {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.gateway-options {
    border: none;
    padding: 0;
    margin: 1.5rem 0;
}

.gateway-options legend {
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--secondary);
}

.gateway-card {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    background: #ffffff;
    min-height: 44px;
}

.gateway-card:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.gateway-card:has(input:checked) {
    border-color: var(--primary);
    background: var(--primary-light);
}

.gateway-card input[type="radio"] {
    margin-top: 0.2rem;
    width: 1.1rem;
    height: 1.1rem;
    min-height: auto;
    accent-color: var(--primary);
    cursor: pointer;
    flex-shrink: 0;
}

.gateway-info {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.gateway-title {
    font-weight: 600;
    color: var(--secondary);
    transition: var(--transition);
}

.gateway-desc {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.4;
}

.gateway-card input[type="radio"]:checked + .gateway-info .gateway-title {
    font-weight: 800;
    color: var(--primary-hover);
}

.gateway-hint {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.message {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.message.info {
    background: #eff6ff;
    color: #1e3a8a;
    border: 1px solid #bfdbfe;
}

.message.success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #86efac;
}

.message.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.map-link-container {
    margin-top: 1rem;
}

.map-fallback-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0.85rem 1.2rem;
    background: var(--primary);
    color: #ffffff;
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 600;
    width: 100%;
}

.map-fallback-btn:hover {
    background: var(--primary-hover);
}

.location-text {
    margin-top: 0.75rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.button-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.95rem 1.6rem;
    background: var(--primary);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    min-height: 48px;
}

.button-primary:hover {
    background: var(--primary-hover);
}

.bank-card {
    background: var(--surface-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

.bank-card h2, .bank-card h3 {
    color: var(--secondary);
    margin-bottom: 1rem;
}

.bank-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-top: 0.75rem;
}

.bank-value {
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--secondary);
}

.site-footer {
    background-color: var(--secondary);
    color: #f8fafc;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-footer p {
    margin: 0.35rem 0;
    font-size: 0.95rem;
    color: rgba(248, 250, 252, 0.88);
}

.site-footer a {
    color: #ffffff;
    text-decoration: underline;
}

.site-footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    text-align: center;
}

/* ===================================================
   10. RESPONSIVE MEDIA QUERIES
   =================================================== */

/* TABLETS & HAMBURGER MENU BREAKPOINT (Trigger at 889px and below) */
@media (max-width: 889px) {
    .nav-toggle {
        display: flex;
    }

    .main-nav ul {
        display: none;
        position: absolute;
        top: calc(100% + 0.85rem);
        right: -4%;
        width: calc(100vw - 8%);
        max-width: 360px;
        background-color: var(--surface-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-lg);
        flex-direction: column;
        padding: 1.25rem;
        gap: 0.5rem;
        z-index: 100;
        align-items: stretch;
    }

    .main-nav ul.open {
        display: flex;
    }

    .main-nav li {
        width: 100%;
        text-align: left;
    }

    .main-nav a {
        display: block;
        padding: 0.75rem 1rem;
        border-radius: var(--radius-sm);
        font-size: 1.05rem;
    }

    .main-nav a:hover,
    .main-nav a:focus {
        background-color: var(--bg-main);
    }

    .main-nav .nav-cta {
        display: block;
        text-align: center;
        margin-top: 0.5rem;
        padding: 0.85rem;
    }
}

/* TABLETS & MEDIUM SCREENS (Max-width: 968px) */
@media (max-width: 968px) {
    .hero-grid,
    .hero-card,
    .content-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .mission-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .program-cards-grid {
        grid-template-columns: 1fr;
    }

    .cta-banner-card {
        flex-direction: column;
        text-align: center;
        padding: 2.5rem 1.75rem;
    }

    .cta-content p {
        margin: 0 auto;
    }

    .cta-btns,
    .hero-cta-group {
        justify-content: center;
        width: 100%;
    }

    .hero-text {
        text-align: center;
    }

    .hero-text h1 {
        font-size: 2.1rem;
    }

    .hero-card h1 {
        font-size: 2rem;
    }
}

/* SMALL SCREENS & MOBILE DEVICES (Max-width: 600px) */
@media (max-width: 600px) {
    .mission-grid {
        grid-template-columns: 1fr;
    }

    .field-inline {
        grid-template-columns: 1fr;
    }

    .trust-flex {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 0.75rem;
    }

    .trust-item {
        justify-content: center;
    }

    .hero-section {
        padding: 2.5rem 0;
    }

    .hero-text h1 {
        font-size: 1.75rem;
    }

    .hero-card h1 {
        font-size: 1.65rem;
    }

    .fc-hero-writeup p {
        text-align: left;
    }

    .section-title h2 {
        font-size: 1.6rem;
    }

    .cta-content h2 {
        font-size: 1.5rem;
    }

    .hero-card,
    .info-panel,
    .donation-form,
    .contact-form,
    .contact-card {
        padding: 1.25rem;
        border-radius: var(--radius-md);
    }

    .cta-btns .btn,
    .hero-cta-group .btn {
        width: 100%;
    }

    .btn {
        width: 100%;
    }
}