/* -----------------------------------------------------------
   LLV GLOBAL DESIGN SYSTEM — PREMIUM BRIGHT CORPORATE
   Typography B • Palette C • Spacing C • Sticky Header • Gradient Hero
----------------------------------------------------------- */

/* -----------------------------------------------------------
   ROOT VARIABLES
----------------------------------------------------------- */
:root {
    /* Colors */
    --blue-primary: #1a73e8;
    --blue-light: #e8f1fd;
    --gray-soft: #f5f7fa;
    --gray-border: #e2e8f0;
    --text-dark: #222;
    --text-muted: #555;
    --white: #ffffff;

    /* Spacing (Premium + Spacious) */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 32px;
    --space-lg: 56px;
    --space-xl: 90px;

    /* Typography */
    --font-heading: "Source Serif Pro", serif;
    --font-body: "Inter", sans-serif;

    /* Shadows */
    --shadow-soft: 0 4px 14px rgba(0,0,0,0.08);
    --shadow-card: 0 6px 20px rgba(0,0,0,0.10);

    /* Layout */
    --max-width: 1200px;
}

/* -----------------------------------------------------------
   RESET (SAFE MODERN RESET)
----------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--gray-soft);
    color: var(--text-dark);
    line-height: 1.65;
}

img {
    max-width: 100%;
    display: block;
    border-radius: 6px;
}

ul {
    padding-left: 20px;
}

/* -----------------------------------------------------------
   LAYOUT CONTAINERS
----------------------------------------------------------- */
section {
    padding: var(--space-xl) var(--space-sm);
    max-width: var(--max-width);
    margin: 0 auto;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-sm);
}

/* Responsive Grid */
.grid {
    display: grid;
    gap: var(--space-md);
}

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

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* -----------------------------------------------------------
   HEADER (STICKY, PREMIUM)
----------------------------------------------------------- */
header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: var(--white);
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--gray-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-soft);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo img {
    height: 70px;
}

.logo span {
    font-size: 1.6rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

nav a {
    margin-left: var(--space-md);
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 1rem;
}

nav a:hover {
    color: var(--blue-primary);
}

/* -----------------------------------------------------------
   HERO (GRADIENT BLUE → WHITE)
----------------------------------------------------------- */
.hero {
    background: linear-gradient(to bottom, var(--blue-light), var(--white));
    padding: var(--space-xl) var(--space-sm);
    border-bottom: 1px solid var(--gray-border);
}

.hero-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.hero-tagline {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--blue-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-xs);
}

/* -----------------------------------------------------------
   SECTION TITLES
----------------------------------------------------------- */
.section-title {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: var(--space-xs);
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

/* -----------------------------------------------------------
   CARDS (ELEVATED, PREMIUM)
----------------------------------------------------------- */
.card {
    background: var(--white);
    padding: var(--space-md);
    border-radius: 10px;
    box-shadow: var(--shadow-card);
    transition: 0.25s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 28px rgba(0,0,0,0.12);
}

.card h3 {
    font-family: var(--font-heading);
    margin-bottom: var(--space-xs);
}

.card p {
    color: var(--text-muted);
}

/* -----------------------------------------------------------
   BUTTONS
----------------------------------------------------------- */
.btn {
    display: inline-block;
    background: var(--blue-primary);
    color: var(--white);
    padding: 14px 26px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.2s ease;
}

.btn:hover {
    background: #155fc7;
}

/* -----------------------------------------------------------
   CONTACT PAGE
----------------------------------------------------------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

input, select, textarea {
    padding: 14px;
    border: 1px solid var(--gray-border);
    border-radius: 6px;
    font-size: 1rem;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--blue-primary);
    outline: none;
}

/* -----------------------------------------------------------
   FOOTER
----------------------------------------------------------- */
footer {
    text-align: center;
    padding: var(--space-lg);
    background: var(--white);
    border-top: 1px solid var(--gray-border);
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-top: var(--space-xl);
}

/* -----------------------------------------------------------
   RESPONSIVE
----------------------------------------------------------- */
@media (max-width: 900px) {
    .hero-inner,
    .grid-2,
    .contact-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    nav a {
        margin-left: var(--space-sm);
    }

    .hero h1 {
        font-size: 2.4rem;
    }
}