/* ================================
   GLOBAL STYLES & VARIABLES
   ================================ */
:root {
    --color-bg: #f7f9fc;
    --color-surface: #ffffff;
    --color-primary: #0f4c92;
    --color-primary-soft: #e5efff;
    --color-primary-dark: #0a3562;
    --color-text: #102a43;
    --color-muted: #556a7a;
    --color-border: #d9e2ec;
    --color-shadow: rgba(16, 42, 67, 0.08);
    --spacing-xs: 4px;
    --spacing-sm: 10px;
    --spacing-md: 18px;
    --spacing-lg: 28px;
    --spacing-xl: 44px;
    --max-width: 1120px;
    --transition-speed: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--color-text);
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

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

button,
a {
    transition: color var(--transition-speed), background-color var(--transition-speed), transform var(--transition-speed);
}

button,
a {
    font: inherit;
}

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

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

ul,
ol {
    margin: 1rem 0;
    padding-left: 1.4rem;
}

li {
    margin-bottom: 0.75rem;
}

h1,
h2,
h3,
h4,
p {
    margin: 0;
}

h1 {
    font-size: clamp(2rem, 2.4vw, 2.6rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(1.55rem, 2vw, 2rem);
    line-height: 1.2;
}

h3 {
    font-size: clamp(1.1rem, 1.4vw, 1.35rem);
    line-height: 1.35;
}

p {
    margin-bottom: 1.25rem;
    color: var(--color-muted);
}

.skip-link {
    position: absolute;
    top: -48px;
    left: 16px;
    background: var(--color-text);
    color: #fff;
    padding: 10px 16px;
    border-radius: 999px;
    z-index: 100;
}

.skip-link:focus {
    top: 16px;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 999px;
    font-weight: 700;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
}

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

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

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

.btn-secondary:hover,
.btn-secondary:focus {
    background: var(--color-primary-soft);
}

.back-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: auto;
    margin: var(--spacing-md) 0;
    margin-left: var(--spacing-md);
    padding: 12px 22px;
    background-color: var(--color-text);
    color: #fff;
    border-radius: 999px;
}

.back-button:hover,
.back-button:focus {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
}

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

.hero {
    max-width: var(--max-width);
    margin: 40px auto 24px;
    padding: 40px 32px;
    border-radius: 28px;
    background: linear-gradient(180deg, #ffffff 0%, #eef5ff 100%);
    border: 1px solid var(--color-border);
    box-shadow: 0 18px 44px var(--color-shadow);
}

.hero p {
    font-size: 1.05rem;
    color: var(--color-muted);
    max-width: 860px;
}

.chooseus,
.visionmission,
.about-us,
.contact-us,
.services {
    max-width: var(--max-width);
    margin: 0 auto 36px;
    padding: 0 24px;
}

.chooseus .container,
.visionmission .container,
.about-us .container,
.service,
.contact-us .address {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 28px;
    box-shadow: 0 18px 44px var(--color-shadow);
}

.chooseus .container,
.visionmission .container {
    padding: 32px;
}

.chooseus h2,
.visionmission h2,
.about-us h1,
.service h2,
.serviceitems h3,
.contact-us h1,
.address h3 {
    color: var(--color-text);
}

.chooseus h2,
.visionmission h2 {
    margin-bottom: 18px;
}

.chooseus p,
.visionmission p,
.about-us p,
.service p,
.serviceitems li,
.address p {
    color: var(--color-muted);
}

.strengths {
    margin-top: 24px;
}

.strengths p {
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 16px;
}

.strengths ul {
    list-style: disc;
}

.strengths li {
    margin-bottom: 0.85rem;
}

.about-us {
    padding-top: 40px;
}

.about-us .container {
    padding: 40px;
}

.about-us h1 {
    margin-bottom: 22px;
}

.services {
    display: grid;
    gap: 24px;
}

.service {
    padding: 32px;
}

.service h2 {
    margin-bottom: 18px;
    color: var(--color-primary-dark);
}

.service p {
    margin-bottom: 1rem;
}

.serviceitems {
    margin-top: 20px;
}

.serviceitems h3 {
    margin-bottom: 14px;
    font-size: 1.1rem;
}

.serviceitems ul {
    list-style: disc;
    padding-left: 1.5rem;
}

.serviceitems li {
    margin-bottom: 0.8rem;
    color: var(--color-muted);
}

.contact-us {
    padding-top: 40px;
}

.contact-us h1 {
    margin-bottom: 24px;
}

.contact-us .address {
    padding: 30px;
}

.address h3 {
    margin-bottom: 14px;
}

.address p {
    margin-bottom: 18px;
}

.address a {
    display: inline-block;
    margin-right: 14px;
    color: var(--color-primary-dark);
    text-decoration: none;
    font-weight: 700;
}

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

@media (max-width: 900px) {
    .hero,
    .chooseus,
    .visionmission,
    .about-us,
    .services,
    .contact-us {
        margin-bottom: 28px;
    }

    .hero,
    .chooseus .container,
    .visionmission .container,
    .about-us .container,
    .service,
    .contact-us .address {
        padding: 28px;
    }
}

@media (max-width: 680px) {
    .hero,
    .chooseus,
    .visionmission,
    .about-us,
    .services,
    .contact-us {
        padding: 0 18px;
    }

    .hero,
    .chooseus .container,
    .visionmission .container,
    .about-us .container,
    .service,
    .contact-us .address {
        padding: 24px;
    }

    .container,
    .chooseus .container,
    .visionmission .container,
    .about-us .container {
        width: min(100%, calc(100% - 36px));
    }
}

@media (max-width: 520px) {
    h1 {
        font-size: 1.8rem;
    }

    h2 {
        font-size: 1.4rem;
    }

    .btn-primary,
    .btn-secondary,
    .back-button {
        width: 100%;
    }

    .strengths ul,
    .serviceitems ul {
        padding-left: 1.2rem;
    }
}