/* ===== LABIM3D - BASE STYLES ===== */

/* ===== COLOR SYSTEM ===== */
:root {
    /* Primary Colors */
    --color-primary: #F5C842;        /* Yellow - brand accent */
    --color-secondary: #1A1A1A;      /* Near black - main dark */
    --color-accent: #E63946;         /* Red - call to action */
    
    /* Neutral Colors */
    --color-dark: #0D0D0D;           /* Deep black - text */
    --color-gray: #4A4A4A;           /* Medium gray */
    --color-light-gray: #E0E0E0;     /* Light gray - borders */
    --color-light: #F5F5F5;          /* Background */
    --color-white: #FFFFFF;          /* Pure white */
    
    /* Accent Colors */
    --color-gold: #D4AF37;           /* Gold accent */
    --color-success: #06D6A0;        /* Success states */
    --color-warning: #FFB703;        /* Warnings */
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #F5C842 0%, #FFD666 100%);
    --gradient-dark: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
    --gradient-accent: linear-gradient(135deg, #E63946 0%, #FF5964 100%);
    --gradient-light: linear-gradient(135deg, #F5F5F5 0%, #4A4A4A 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(13, 13, 13, 0.1);
    --shadow-md: 0 4px 16px rgba(13, 13, 13, 0.15);
    --shadow-lg: 0 8px 24px rgba(13, 13, 13, 0.2);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Typography */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-mono: 'Courier New', monospace;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--color-dark);
    background: var(--color-light);
    min-height: 100vh;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

/* ===== HEADER & NAVIGATION ===== */
header {
    background: var(--gradient-light);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-labim3d {
    height: 60px;
    width: auto;
}

.logo-uach {
    height: 75px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.nav-links a {
    color: var(--color-dark);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    transition: color 0.3s ease;
}

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

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--color-dark);
    transition: all 0.3s ease;
    border-radius: 3px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    background: var(--gradient-primary);
    color: var(--color-dark);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--gradient-dark);
    color: var(--color-white);
}

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-secondary);
    color: var(--color-secondary);
}

.btn-outline:hover {
    background: var(--color-secondary);
    color: var(--color-white);
}

/* ===== CARDS ===== */
.card {
    background: var(--color-white);
    border-radius: 15px;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* ===== SECTIONS ===== */
section {
    padding: var(--spacing-xl) var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    font-size: 2.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
}

/* ===== FOOTER ===== */
footer {
    background: var(--gradient-dark);
    color: var(--color-white);
    padding: var(--spacing-lg) var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}

footer p {
    margin: 0.5rem 0;
    opacity: 0.9;
}

/* ===== UTILITIES ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 70%;
        max-width: 300px;
        background: var(--gradient-light);
        flex-direction: column;
        padding: var(--spacing-md);
        transition: right 0.3s ease;
        box-shadow: -5px 0 15px rgba(0,0,0,0.3);
        height: calc(100vh - 70px);
    }

    .nav-links.active {
        right: 0;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    section {
        padding: var(--spacing-md) var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .logo-labim3d {
        height: 40px;
    }
    
    .logo-uach {
        height: 50px;
    }
    
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.5rem; }
}