/* ==========================
   MODERN MINIMALIST DESIGN
   ========================== */

:root {
    /* Colors */
    --bg: #f8fafc;
    --surface: #ffffff;

    --text: #0f172a;
    --text-muted: #64748b;

    --accent: #6366f1;
    --accent-hover: #4f46e5;

    --border: #e2e8f0;

    /* Shadows */
    --shadow-sm:
        0 2px 8px rgba(32, 42, 15, 0.16);

    --shadow-md:
        0 8px 30px rgba(15, 23, 42, 0.32);

    /* Layout */
    --radius: 16px;
    --container-width: 1200px;
}

/* ==========================
   RESET
   ========================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);

    font-family:
        Inter,
        system-ui,
        sans-serif;

    line-height: 1.6;
    min-height: 100vh;

    -webkit-font-smoothing: antialiased;
}

/* ==========================
   TYPOGRAPHY
   ========================== */

h1,
h2,
h3,
h4 {
    line-height: 1.1;
    letter-spacing: -0.03em;
}

h1 {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
}

h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

p {
    color: var(--text-muted);
    max-width: 65ch;
}

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

/* ==========================
   LAYOUT
   ========================== */

.container {
    width: min(100% - 2rem, var(--container-width));
    margin-inline: auto;
}

.section {
    padding: 6rem 0;
}

.section-sm {
    padding: 3rem 0;
}

/* ==========================
   NAVBAR
   ========================== */

.navbar {
    padding: 1.25rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.2rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-muted);
    transition: 0.2s;
}

.nav-links a:hover {
    color: var(--text);
}

/* ==========================
   HERO SECTION
   ========================== */

.hero {
    min-height: 70vh;

    display: flex;
    align-items: center;
}

.hero2 {
    min-height: 50vh;

    display: flex;
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.hero-subtitle {
    font-size: 1.2rem;
    max-width: 650px;
}

/* ==========================
   BUTTONS
   ========================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    padding: 0.9rem 1.5rem;

    border-radius: 12px;
    border: none;

    font-weight: 600;
    cursor: pointer;

    transition:
        transform 0.2s ease,
        background 0.2s ease;
}

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

.btn-primary {
    background: var(--accent);
    color: white;
}

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

.btn-secondary {
    background: white;
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: #f8fafc;
}

/* ==========================
   CARDS
   ========================== */

.card {
    background: var(--surface);

    padding: 2rem;

    border-radius: var(--radius);

    box-shadow: var(--shadow-md);

    transition:
        transform 0.25s ease,
        box-shadow 0.25s ease;
}

.card:hover {
    transform: translateY(-4px);

    box-shadow:
        0 12px 40px rgba(15, 23, 42, 0.12);
}

.card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.card-link:hover {
    transform: translateY(-4px);
    box-shadow:
        0 12px 40px rgba(15, 23, 42, 0.12);
}

.card-link:focus-visible {
    outline: 3px solid var(--accent);
    outline-offset: 4px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.arrow {
    transition: transform 0.2s ease;
}

.card-link:hover .arrow {
    transform: translateX(4px);
}

/* ==========================
   GRID
   ========================== */

.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns:
        repeat(2, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns:
        repeat(3, minmax(0, 1fr));
}

.grid-4 {
    grid-template-columns:
        repeat(4, minmax(0, 1fr));
}

/* ==========================
   FEATURE ITEMS
   ========================== */

.feature-icon {
    width: 50px;
    height: 50px;

    background: rgba(99, 102, 241, 0.1);

    color: var(--accent);

    display: flex;
    align-items: center;
    justify-content: center;

    border-radius: 12px;

    margin-bottom: 1rem;
}

.feature-title {
    margin-bottom: 0.5rem;
}

/* ==========================
   FORMS
   ========================== */

input,
textarea {
    width: 100%;

    padding: 1rem;

    border-radius: 12px;
    border: 1px solid var(--border);

    background: white;

    font: inherit;
}

input:focus,
textarea:focus {
    outline: none;

    border-color: var(--accent);

    box-shadow:
        0 0 0 4px rgba(99, 102, 241, 0.12);
}

/* ==========================
   FOOTER
   ========================== */

footer {
    padding: 4rem 0;

    border-top: 1px solid var(--border);

    color: var(--text-muted);
}

/* ==========================
   UTILITIES
   ========================== */

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

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

/* ==========================
   RESPONSIVE
   ========================== */

@media (max-width: 900px) {

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .nav-links {
        gap: 1rem;
    }

    .hero {
        min-height: auto;
        padding: 5rem 0;
    }

    .section {
        padding: 4rem 0;
    }
}