/* 
 * Aivot Space - Light Tech Theme (Source Replica)
 * -----------------------------------------------
 * Core Variables & Reset
 */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f4f6f8;
    --text-primary: #0d141a;
    --text-secondary: #56585e;
    --accent-color: #673de6;
    /* Primary Purple */
    --accent-dark: #2f1c6a;
    /* Meteorite Dark */
    --accent-light: #4fc3f7;
    /* Light Blue */
    --footer-bg: #1A2633;
    /* Dark Blue Footer */
    --footer-text: #ffffff;

    --gradient-hero: linear-gradient(135deg, #E6F6FB 0%, #4FC3F7 50%, #2F5D7C 100%, #2F5D7C);
    --gradient-card: linear-gradient(135deg, #2F5D7C, #8F11A8);
    /* From source ai-dsx5Yh */

    --font-primary: 'Montserrat', sans-serif;

    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-primary);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.3;
    color: inherit;
}

h1 {
    font-size: 4rem;
}

h2 {
    font-size: 3.5rem;
}

h3 {
    font-size: 3rem;
}

h4 {
    font-size: 2.5rem;
}

h5 {
    font-size: 1.625rem;
}

h6 {
    font-size: 1.125rem;
}

p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 6rem 0;
}

/* 
 * Navigation 
 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.nav-logo img {
    height: 26px;
    width: auto;
}

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

.nav-link {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-primary);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    opacity: 0.7;
}

/* Mobile Menu Toggle */
.mobile-toggle {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-primary);
}

/* 
 * Hero Section 
 */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
    /* Offset for fixed nav */
    background: var(--gradient-hero);
    color: white;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 2;
    text-align: center;
    margin: 0 auto;
}

.hero-title {
    color: white;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 2.5rem;
    color: rgba(255, 255, 255, 0.9);
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: transparent;
    border: 1px solid white;
    color: white;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.btn:hover {
    background: white;
    color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    background: var(--text-primary);
    /* Dark */
    border: none;
    color: white;
}

.btn-primary:hover {
    background: #333;
    color: white;
}

/* 
 * Programs / Cards Grid 
 */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: white;
    padding: 2.5rem;
    border-radius: 0px;
    /* Source uses sharp corners mostly, or large radius */
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.card-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    flex-grow: 1;
}

.card-image img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    margin-bottom: 1.5rem;
    object-fit: cover;
}


/* 
 * Footer 
 */
.footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    padding: 4rem 0 2rem;
}

.footer h4,
.footer h5 {
    color: white;
    margin-bottom: 1.5rem;
}

.footer p {
    color: rgba(255, 255, 255, 0.7);
}

.footer a {
    color: white;
    text-decoration: underline;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

/* Shape/Decoration */
.shape-rect {
    width: 100%;
    height: 160px;
    background: rgba(255, 255, 255, 0.1);
}

/* 
 * Responsive 
 */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        text-align: center;
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-toggle {
        display: block;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
    }
}

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

.text-white {
    color: white !important;
}

.bg-light {
    background-color: #f9f9f9;
}

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

.mt-4 {
    margin-top: 4rem;
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Contact Form */
.contact-form-section {
    background: #fff;
    padding: 6rem 0;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.form-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(103, 61, 230, 0.1);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}