/* ============================================
   Sunrise Respiratory Care — Stylesheet
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --green-900: #052e16;
    --green-800: #14532d;
    --green-700: #166534;
    --green-600: #15803a;
    --green-500: #16a34a;
    --green-100: #dcfce7;
    --green-50:  #f0fdf4;

    --neutral-950: #0a0a09;
    --neutral-900: #171716;
    --neutral-800: #262624;
    --neutral-700: #3f3f3c;
    --neutral-600: #52524f;
    --neutral-500: #71716c;
    --neutral-400: #a3a39b;
    --neutral-300: #d4d4cd;
    --neutral-200: #e5e5df;
    --neutral-100: #f2f2ef;
    --neutral-50:  #f5f5f0;
    --neutral-25:  #fafaf7;

    --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-sans:  'Inter', system-ui, -apple-system, sans-serif;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,.05), 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.06);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,.08), 0 4px 10px -4px rgba(0,0,0,.06);
    --shadow-xl: 0 20px 50px -12px rgba(0,0,0,.12);

    --transition: 200ms cubic-bezier(.4,0,.2,1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.65;
    color: var(--neutral-800);
    background: var(--neutral-50);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }

h1, h2, h3, h4 {
    font-family: var(--font-serif);
    font-weight: 700;
    line-height: 1.2;
    color: var(--neutral-900);
}

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    background: var(--green-700);
    color: #fff;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    z-index: 9999;
    font-weight: 600;
}
.skip-link:focus { top: 16px; }

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 600;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--green-700);
    color: #fff;
    border-color: var(--green-700);
}
.btn-primary:hover {
    background: var(--green-800);
    border-color: var(--green-800);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: rgba(255,255,255,.15);
    color: #fff;
    border-color: rgba(255,255,255,.4);
    backdrop-filter: blur(4px);
}
.btn-secondary:hover {
    background: rgba(255,255,255,.25);
    border-color: #fff;
    transform: translateY(-1px);
}

.btn-outline-light {
    background: transparent;
    color: var(--green-700);
    border-color: var(--green-700);
}
.btn-outline-light:hover {
    background: var(--green-700);
    color: #fff;
    transform: translateY(-1px);
}

.btn-nav {
    background: var(--green-700);
    color: #fff;
    border-color: var(--green-700);
    padding: 10px 22px;
    font-size: 14px;
}
.btn-nav:hover {
    background: var(--green-600);
    border-color: var(--green-600);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
    border-radius: var(--radius-lg);
}

.btn-full {
    width: 100%;
    justify-content: center;
    padding: 14px 28px;
}

/* --- Section Utilities --- */
.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--green-600);
    margin-bottom: 12px;
}
.section-label-light { color: var(--green-100); }

.section-title {
    font-size: clamp(28px, 4vw, 44px);
    margin-bottom: 16px;
}
.section-title-light { color: #fff; }

.section-desc {
    font-size: 17px;
    color: var(--neutral-600);
    max-width: 600px;
    line-height: 1.7;
}
.section-desc-light { color: rgba(255,255,255,.75); }

.section-header {
    text-align: center;
    margin-bottom: 56px;
}
.section-header .section-desc { margin: 0 auto; }

/* --- Header --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(245,245,240,.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--neutral-200);
    transition: box-shadow var(--transition);
}
.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-serif);
    font-weight: 700;
    font-size: 18px;
    color: var(--green-700);
}
.logo-light { color: #fff; }
.logo-text { line-height: 1.2; }

.main-nav ul {
    display: flex;
    align-items: center;
    gap: 4px;
}
.main-nav a:not(.btn) {
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--neutral-700);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.main-nav a:not(.btn):hover {
    color: var(--green-700);
    background: var(--green-50);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--neutral-700);
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}
.nav-toggle:hover { background: var(--neutral-100); }

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 92vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(
        135deg,
        var(--green-900) 0%,
        var(--green-700) 35%,
        #1a7a4a 55%,
        #1d8a55 70%,
        #21965b 100%
    );
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(ellipse 80% 60% at 20% 80%, rgba(22,163,74,.3) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 20%, rgba(20,83,45,.4) 0%, transparent 50%),
        radial-gradient(ellipse 50% 40% at 50% 50%, rgba(22,99,52,.2) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    padding: 120px 24px 80px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.2);
    color: rgba(255,255,255,.9);
    padding: 8px 20px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 32px;
    backdrop-filter: blur(4px);
}

.hero-headline {
    font-size: clamp(36px, 6vw, 68px);
    color: #fff;
    line-height: 1.1;
    margin-bottom: 24px;
    font-weight: 700;
}

.hero-accent {
    display: block;
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 600;
    color: var(--green-100);
    font-size: .85em;
}

.hero-sub {
    font-size: clamp(16px, 2vw, 19px);
    color: rgba(255,255,255,.82);
    max-width: 620px;
    margin: 0 auto 40px;
    line-height: 1.75;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}
.stat-number {
    display: block;
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 700;
    color: #fff;
}
.stat-label {
    font-size: 13px;
    color: rgba(255,255,255,.65);
    text-transform: uppercase;
    letter-spacing: .06em;
}
.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,.2);
}

.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    line-height: 0;
}
.hero-wave svg { display: block; width: 100%; height: auto; }

/* --- Services --- */
.services {
    padding: 96px 0;
    background: var(--neutral-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: #fff;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: all var(--transition);
}
.service-card:hover {
    border-color: var(--green-200, #bbf7d0);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-50);
    border: 1px solid var(--green-100);
    border-radius: var(--radius-md);
    color: var(--green-700);
    margin-bottom: 20px;
}

.service-card h3 {
    font-family: var(--font-sans);
    font-size: 18px;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 10px;
}

.service-card p {
    font-size: 15px;
    color: var(--neutral-600);
    line-height: 1.7;
}

/* --- About --- */
.about {
    padding: 96px 0;
    background: #fff;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-images {
    position: relative;
}

.about-img-main {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}
.about-img-main img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.about-img-float {
    position: absolute;
    bottom: -32px;
    right: -24px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 4px solid #fff;
}
.about-img-float img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.about-content .section-label { margin-bottom: 12px; }
.about-content .section-title { margin-bottom: 20px; }
.about-content > p {
    color: var(--neutral-600);
    margin-bottom: 16px;
    font-size: 16px;
    line-height: 1.75;
}

.about-features {
    margin-top: 28px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 24px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 500;
    color: var(--neutral-700);
}

.check-icon {
    color: var(--green-600);
    flex-shrink: 0;
}

/* --- Why Choose Us --- */
.why-choose {
    padding: 96px 0;
    background: linear-gradient(135deg, var(--green-900) 0%, var(--green-700) 100%);
    position: relative;
    overflow: hidden;
}
.why-choose::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(ellipse at 30% 0%, rgba(255,255,255,.04) 0%, transparent 60%);
    pointer-events: none;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    position: relative;
}

.why-card {
    background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    backdrop-filter: blur(4px);
    transition: all var(--transition);
}
.why-card:hover {
    background: rgba(255,255,255,.12);
    border-color: rgba(255,255,255,.18);
    transform: translateY(-2px);
}

.why-number {
    display: block;
    font-family: var(--font-serif);
    font-size: 48px;
    font-weight: 700;
    color: rgba(255,255,255,.15);
    line-height: 1;
    margin-bottom: 16px;
}

.why-card h3 {
    font-family: var(--font-sans);
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.why-card p {
    font-size: 15px;
    color: rgba(255,255,255,.72);
    line-height: 1.75;
}

/* --- Testimonials --- */
.testimonials {
    padding: 96px 0;
    background: var(--neutral-50);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: #fff;
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    position: relative;
    transition: all var(--transition);
}
.testimonial-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.testimonial-quote {
    color: var(--green-200, #86efac);
    margin-bottom: 16px;
}

.testimonial-text {
    font-size: 15px;
    color: var(--neutral-700);
    line-height: 1.8;
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.testimonial-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--green-100);
    color: var(--green-700);
    font-weight: 700;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.testimonial-name {
    display: block;
    font-weight: 600;
    font-size: 15px;
    color: var(--neutral-900);
}

.testimonial-location {
    display: block;
    font-size: 13px;
    color: var(--neutral-500);
}

/* --- CTA --- */
.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--green-800) 0%, var(--green-600) 100%);
    position: relative;
    overflow: hidden;
}
.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(ellipse at 70% 50%, rgba(255,255,255,.06) 0%, transparent 60%);
    pointer-events: none;
}

.cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    position: relative;
    flex-wrap: wrap;
}

.cta-content { flex: 1; min-width: 280px; }

.cta-title {
    font-size: clamp(28px, 4vw, 42px);
    color: #fff;
    margin-bottom: 12px;
}

.cta-text {
    font-size: 17px;
    color: rgba(255,255,255,.8);
    max-width: 480px;
    line-height: 1.7;
}

.cta-actions {
    display: flex;
    gap: 16px;
    flex-shrink: 0;
    flex-wrap: wrap;
}

/* --- Contact --- */
.contact {
    padding: 96px 0;
    background: #fff;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
    align-items: start;
}

.contact-item {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
}

.contact-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--green-50);
    border: 1px solid var(--green-100);
    border-radius: var(--radius-md);
    color: var(--green-700);
    flex-shrink: 0;
}

.contact-item strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--neutral-900);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.contact-item p {
    font-size: 15px;
    color: var(--neutral-600);
    line-height: 1.6;
}
.contact-item a {
    color: var(--green-700);
    font-weight: 500;
    transition: color var(--transition);
}
.contact-item a:hover { color: var(--green-500); }

.contact-form-wrapper {
    background: var(--neutral-50);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.form-title {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--neutral-700);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--neutral-300);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--neutral-900);
    background: #fff;
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--green-500);
    box-shadow: 0 0 0 3px rgba(22,163,74,.12);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--neutral-400); }
.form-group textarea { resize: vertical; min-height: 100px; }

.form-privacy {
    font-size: 13px;
    color: var(--neutral-500);
    text-align: center;
    margin-top: 12px;
}

.form-success {
    text-align: center;
    padding: 40px 20px;
}
.form-success h3 {
    font-family: var(--font-serif);
    font-size: 24px;
    color: var(--green-700);
    margin: 16px 0 8px;
}
.form-success p {
    color: var(--neutral-600);
    font-size: 15px;
}

/* --- Footer --- */
.site-footer {
    background: var(--neutral-950);
    color: rgba(255,255,255,.65);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    margin-top: 12px;
    max-width: 260px;
}

.footer-links h4,
.footer-contact h4 {
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: rgba(255,255,255,.4);
    margin-bottom: 16px;
}

.footer-links ul { display: flex; flex-direction: column; gap: 10px; }
.footer-links a {
    font-size: 14px;
    color: rgba(255,255,255,.65);
    transition: color var(--transition);
}
.footer-links a:hover { color: #fff; }

.footer-contact p {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 4px;
}
.footer-contact a {
    color: rgba(255,255,255,.65);
    transition: color var(--transition);
}
.footer-contact a:hover { color: #fff; }

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    padding: 24px 0;
    font-size: 13px;
    color: rgba(255,255,255,.4);
}
.footer-bottom a {
    color: rgba(255,255,255,.4);
    transition: color var(--transition);
}
.footer-bottom a:hover { color: #fff; }

/* --- Scroll Reveal --- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 600ms cubic-bezier(.4,0,.2,1), transform 600ms cubic-bezier(.4,0,.2,1);
}
.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonials-grid .testimonial-card:last-child { grid-column: span 2; max-width: 50%; margin: 0 auto; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; align-items: center; justify-content: center; }

    .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(245,245,240,.98);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--neutral-200);
        padding: 16px 24px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        opacity: 0;
        transition: all 300ms cubic-bezier(.4,0,.2,1);
        pointer-events: none;
    }
    .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    .main-nav ul {
        flex-direction: column;
        gap: 4px;
        width: 100%;
    }
    .main-nav a:not(.btn),
    .main-nav .btn-nav {
        width: 100%;
        text-align: left;
        padding: 12px 16px;
    }

    .hero { min-height: auto; padding-bottom: 60px; }
    .hero-content { padding: 110px 24px 60px; }
    .hero-stats { gap: 20px; }
    .stat-divider { display: none; }

    .services { padding: 64px 0; }
    .services-grid { grid-template-columns: 1fr; }

    .about { padding: 64px 0; }
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
    .about-img-float { right: 16px; bottom: -24px; }
    .about-features { grid-template-columns: 1fr; }

    .why-choose { padding: 64px 0; }
    .why-grid { grid-template-columns: 1fr; }

    .testimonials { padding: 64px 0; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .testimonials-grid .testimonial-card:last-child { grid-column: auto; max-width: 100%; }

    .cta { padding: 56px 0; }
    .cta-inner { flex-direction: column; text-align: center; }
    .cta-text { margin: 0 auto; }
    .cta-actions { justify-content: center; }

    .contact { padding: 64px 0; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .contact-form-wrapper { padding: 28px; }
    .form-row { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-actions { flex-direction: column; width: 100%; }
    .hero-actions .btn { width: 100%; justify-content: center; }
    .cta-actions { flex-direction: column; width: 100%; }
    .cta-actions .btn-lg { width: 100%; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
    .reveal { opacity: 1; transform: none; }
}