/* ============================================================
   Learn Heal Foundation — Main Stylesheet
   "Learning to Care. Healing to Save."
   ============================================================ */

/* ─── CSS Variables ──────────────────────────────────────── */
:root {
    --color-primary:      #0A2342;
    --color-primary-dark: #061729;
    --color-secondary:    #C0392B;
    --color-secondary-light: #E74C3C;
    --color-white:        #FFFFFF;
    --color-gray:         #F4F6F8;
    --color-gray-mid:     #DEE2E6;
    --color-text:         #1A1A2E;
    --color-muted:        #6C757D;

    --font-primary:   'Inter', sans-serif;
    --font-heading:   'Poppins', sans-serif;

    --shadow-sm:   0 2px 8px rgba(10,35,66,.08);
    --shadow-md:   0 4px 20px rgba(10,35,66,.12);
    --shadow-lg:   0 8px 40px rgba(10,35,66,.16);

    --radius-sm:   6px;
    --radius-md:   12px;
    --radius-lg:   20px;
    --radius-pill: 50px;

    --transition: all .25s ease;
}

/* ─── Reset & Base ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-primary);
    color: var(--color-text);
    background: var(--color-white);
    line-height: 1.7;
    font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.3;
}

a { color: var(--color-secondary); transition: var(--transition); }
a:hover { color: var(--color-primary); }

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

/* ─── Utilities ──────────────────────────────────────────── */
.text-primary-custom  { color: var(--color-primary)   !important; }
.text-secondary-custom{ color: var(--color-secondary) !important; }
.bg-primary-custom    { background-color: var(--color-primary)   !important; }
.bg-secondary-custom  { background-color: var(--color-secondary) !important; }
.bg-gray              { background-color: var(--color-gray)      !important; }

.section-py { padding: 80px 0; }
.section-py-sm { padding: 50px 0; }

/* ─── Section Headings ───────────────────────────────────── */
.section-header { margin-bottom: 50px; text-align: center; }
.section-header .badge-pill {
    display: inline-block;
    background: rgba(192,57,43,.12);
    color: var(--color-secondary);
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    padding: 6px 18px;
    border-radius: var(--radius-pill);
    margin-bottom: 14px;
}
.section-header h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); margin-bottom: 14px; }
.section-header p  { color: var(--color-muted); max-width: 600px; margin: 0 auto; }
.section-divider {
    width: 60px; height: 4px;
    background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
    border-radius: 2px;
    margin: 16px auto 0;
}

/* ─── Buttons ────────────────────────────────────────────── */
.btn-primary-custom {
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    padding: 12px 32px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: .95rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}
.btn-primary-custom:hover {
    background: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary-custom {
    background: var(--color-secondary);
    color: var(--color-white);
    border: none;
    padding: 12px 32px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: .95rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}
.btn-secondary-custom:hover {
    background: var(--color-secondary-light);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline-primary-custom {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    padding: 10px 30px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}
.btn-outline-primary-custom:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

/* ─── Navbar ─────────────────────────────────────────────── */
.navbar-main {
    background: var(--color-primary);
    padding: 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1030;
}

.navbar-main .navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
}
.navbar-main .brand-logo {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(255,255,255,.3);
}
.navbar-main .brand-text { line-height: 1.2; }
.navbar-main .brand-text .org-name {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-white);
}
.navbar-main .brand-text .org-tagline {
    display: block;
    font-size: .7rem;
    color: rgba(255,255,255,.65);
    letter-spacing: .5px;
}

.navbar-main .nav-link {
    color: rgba(255,255,255,.85) !important;
    font-weight: 500;
    font-size: .9rem;
    padding: 20px 16px !important;
    transition: var(--transition);
    position: relative;
}
.navbar-main .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0; left: 16px; right: 16px;
    height: 3px;
    background: var(--color-secondary);
    transform: scaleX(0);
    transition: transform .25s ease;
    border-radius: 2px 2px 0 0;
}
.navbar-main .nav-link:hover,
.navbar-main .nav-link.active {
    color: var(--color-white) !important;
}
.navbar-main .nav-link:hover::after,
.navbar-main .nav-link.active::after {
    transform: scaleX(1);
}

.navbar-main .btn-donate {
    background: var(--color-secondary);
    color: var(--color-white) !important;
    padding: 8px 22px !important;
    border-radius: var(--radius-pill);
    margin-left: 8px;
    font-weight: 600;
}
.navbar-main .btn-donate:hover {
    background: var(--color-secondary-light) !important;
}
.navbar-main .btn-donate::after { display: none; }

.navbar-toggler { border-color: rgba(255,255,255,.3); }
.navbar-toggler-icon { filter: invert(1); }

/* ─── Top Bar ────────────────────────────────────────────── */
.top-bar {
    background: var(--color-primary-dark);
    color: rgba(255,255,255,.75);
    font-size: .82rem;
    padding: 6px 0;
}
.top-bar a { color: rgba(255,255,255,.75); text-decoration: none; }
.top-bar a:hover { color: var(--color-white); }

/* ─── Hero Section ───────────────────────────────────────── */
.hero-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #163a6b 60%, #1a4a8a 100%);
    min-height: 88vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}
.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-section .hero-content { position: relative; z-index: 2; }
.hero-section h1 {
    font-size: clamp(2rem, 4.5vw, 3.6rem);
    color: var(--color-white);
    font-weight: 800;
    margin-bottom: 20px;
}
.hero-section h1 span { color: var(--color-secondary); }
.hero-section p {
    font-size: 1.1rem;
    color: rgba(255,255,255,.82);
    margin-bottom: 36px;
    max-width: 520px;
}
.hero-stats {
    display: flex;
    gap: 32px;
    margin-top: 48px;
    flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat .stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-white);
    font-family: var(--font-heading);
}
.hero-stat .stat-label {
    font-size: .78rem;
    color: rgba(255,255,255,.65);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ─── Cards ──────────────────────────────────────────────── */
.card-lhf {
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(10,35,66,.06);
    transition: var(--transition);
    overflow: hidden;
}
.card-lhf:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.program-card { border-top: 4px solid var(--color-primary); }
.program-card .card-icon {
    width: 60px; height: 60px;
    background: rgba(10,35,66,.08);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 18px;
    color: var(--color-primary);
}

/* ─── Impact Counter ─────────────────────────────────────── */
.impact-section {
    background: var(--color-primary);
    color: var(--color-white);
}
.impact-counter { text-align: center; padding: 30px; }
.impact-counter .counter-value {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: 800;
    color: var(--color-white);
    display: block;
    font-family: var(--font-heading);
}
.impact-counter .counter-label {
    font-size: .85rem;
    color: rgba(255,255,255,.7);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-top: 6px;
}
.impact-counter .counter-icon {
    font-size: 2.4rem;
    margin-bottom: 12px;
    color: var(--color-secondary);
}

/* ─── Footer ─────────────────────────────────────────────── */
.footer-main {
    background: var(--color-primary-dark);
    color: rgba(255,255,255,.75);
    padding: 70px 0 0;
}
.footer-main h5 {
    color: var(--color-white);
    font-family: var(--font-heading);
    margin-bottom: 22px;
    font-size: 1rem;
    font-weight: 600;
}
.footer-main p { font-size: .9rem; line-height: 1.8; }
.footer-main .footer-links { list-style: none; padding: 0; margin: 0; }
.footer-main .footer-links li { margin-bottom: 10px; }
.footer-main .footer-links a {
    color: rgba(255,255,255,.7);
    text-decoration: none;
    font-size: .9rem;
    transition: var(--transition);
}
.footer-main .footer-links a:hover { color: var(--color-secondary); padding-left: 6px; }

.footer-bottom {
    background: rgba(0,0,0,.25);
    padding: 18px 0;
    margin-top: 50px;
    font-size: .85rem;
    color: rgba(255,255,255,.5);
}

.social-links { display: flex; gap: 10px; margin-top: 20px; }
.social-links a {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,.8);
    font-size: 1rem;
    transition: var(--transition);
    text-decoration: none;
}
.social-links a:hover {
    background: var(--color-secondary);
    color: var(--color-white);
    transform: translateY(-3px);
}

/* ─── Newsletter form (footer) ──────────────────────────── */
.newsletter-input {
    border-radius: 8px 0 0 8px !important;
    background: rgba(255,255,255,.1) !important;
    border-color: rgba(255,255,255,.2) !important;
    color: #fff !important;
}
.newsletter-input::placeholder { color: rgba(255,255,255,.45) !important; }
.newsletter-input:focus {
    background: rgba(255,255,255,.18) !important;
    border-color: rgba(255,255,255,.4) !important;
    box-shadow: none !important;
    color: #fff !important;
}
.newsletter-btn {
    background: #c0392b !important;
    color: #fff !important;
    border-radius: 0 8px 8px 0 !important;
    border: none !important;
    padding: 0 16px !important;
}
.newsletter-btn:hover { background: #e74c3c !important; }

/* ─── Form validation states ────────────────────────────── */
.form-control.is-valid, .form-select.is-valid {
    border-color: #28a745;
    background-image: none;
}
.form-control.is-invalid, .form-select.is-invalid {
    border-color: #dc3545;
    background-image: none;
}
.invalid-feedback { display: none; font-size: .8rem; color: #dc3545; margin-top: 4px; }
.form-control.is-invalid ~ .invalid-feedback,
.form-select.is-invalid  ~ .invalid-feedback { display: block; }

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 991px) {
    /* Navbar mobile: keep brand legible */
    .navbar-main .brand-text .org-name { font-size: 1rem; }
    .navbar-main .navbar-collapse {
        background: var(--color-primary);
        padding: 8px 0 16px;
        border-top: 1px solid rgba(255,255,255,.1);
    }
    .navbar-main .navbar-collapse .btn-donate {
        margin-left: 0 !important;
        margin-top: 8px;
        display: inline-flex;
        width: auto;
    }
}

@media (max-width: 768px) {
    .section-py { padding: 50px 0; }
    .section-py-sm { padding: 36px 0; }
    .hero-section { min-height: auto; padding: 70px 0 50px; }
    .hero-stats { gap: 20px; }
    .hero-stat .stat-value { font-size: 1.6rem; }
    .navbar-main .nav-link { padding: 12px 16px !important; }
    .navbar-main .nav-link::after { display: none; }

    /* Footer: stack newsletter on small screens */
    .newsletter-form { flex-wrap: nowrap; }
    .newsletter-input { font-size: .85rem !important; }

    /* Footer bottom links: wrap gracefully */
    .footer-bottom .d-flex { flex-direction: column; align-items: flex-start !important; gap: 8px !important; }
}

@media (max-width: 480px) {
    .hero-section h1 { font-size: 1.9rem; }
    .hero-section p  { font-size: .95rem; }
    .hero-stats { gap: 16px; }
    .hero-stat .stat-value { font-size: 1.4rem; }
    .hero-stat .stat-label { font-size: .7rem; }

    /* Navbar brand: tighter on very small screens */
    .navbar-main .brand-logo { width: 38px; height: 38px; }
    .navbar-main .brand-text .org-name { font-size: .92rem; }
}