/* =========================================================
   MITRA LAUT SULAWESI - MAIN CSS
   Global reset, variables, typography, base layout
========================================================= */

/* ---------- CSS Variables ---------- */
:root {
    --color-primary: #0b67a3;
    --color-primary-dark: #064b7a;
    --color-primary-soft: #eaf5fb;

    --color-secondary: #0f88c6;
    --color-accent: #2bb3d9;

    --color-navy: #071c3a;
    --color-navy-soft: #102b4e;

    --color-white: #ffffff;
    --color-light: #f6f9fc;
    --color-border: #dce8f0;

    --color-text: #17233c;
    --color-muted: #5f6f89;

    --shadow-soft: 0 10px 30px rgba(7, 28, 58, 0.08);
    --shadow-card: 0 8px 22px rgba(7, 28, 58, 0.1);

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;

    --container: 1180px;

    --font-main: "Inter", "Segoe UI", Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background-color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

button,
input,
textarea,
select {
    font: inherit;
}

/* ---------- Layout ---------- */
.container {
    width: min(100% - 40px, var(--container));
    margin-inline: auto;
}

.section {
    padding: 80px 0;
}

.section-sm {
    padding: 55px 0;
}

.section-light {
    background-color: var(--color-light);
}

.section-blue-soft {
    background-color: var(--color-primary-soft);
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4 {
    color: var(--color-navy);
    line-height: 1.15;
    font-weight: 800;
    letter-spacing: -0.03em;
}

h1 {
    font-size: clamp(42px, 5vw, 72px);
}

h2 {
    font-size: clamp(30px, 3vw, 44px);
}

h3 {
    font-size: 22px;
}

p {
    color: var(--color-muted);
    font-size: 16px;
}

.section-label {
    display: inline-block;
    margin-bottom: 10px;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.section-heading {
    max-width: 760px;
    margin: 0 auto 36px;
    text-align: center;
}

.section-heading h2 {
    margin-bottom: 12px;
}

.section-heading p {
    max-width: 620px;
    margin-inline: auto;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 44px;
    padding: 12px 22px;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    transition: 0.25s ease;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 8px 20px rgba(11, 103, 163, 0.22);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: rgba(255, 255, 255, 0.75);
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

.btn-light {
    background-color: var(--color-white);
    color: var(--color-primary);
    box-shadow: var(--shadow-soft);
}

.btn-light:hover {
    transform: translateY(-2px);
}

/* ---------- Utility ---------- */
.text-center {
    text-align: center;
}

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

.two-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 54px;
    align-items: center;
}

.card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
}

.section-placeholder {
    padding: 50px 0;
    background-color: #f8fbfd;
    border-bottom: 1px solid var(--color-border);
}

.section-placeholder p {
    text-align: center;
    color: var(--color-muted);
}