/* =========================================
   main.css - Core Branding & Utility Styles
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@400;500;600;700;800;900&display=swap');

:root {
    /* Color Palette - Premium Dark Tech */
    --bg-main: #030712; /* Deep space dark */
    --bg-secondary: #111827; /* Slightly lighter gray-blue */
    --bg-sidebar: #020617; /* Slate dark */
    
    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-sidebar: #94a3b8;
    --text-sidebar-head: #ffffff;
    
    /* Accents */
    --accent: #0ea5e9;
    --accent-dark: #0284c7;
    --accent-glow: rgba(14, 165, 233, 0.4);
    --accent-gradient: linear-gradient(135deg, #0ea5e9 0%, #8b5cf6 100%);
    --accent-gradient-hover: linear-gradient(135deg, #38bdf8 0%, #a78bfa 100%);
    
    /* FTC Team Specific */
    --ftc-accent: #10B981;
    --ftc-accent-dark: #059669;

    /* Semantic Elements */
    --border: rgba(255, 255, 255, 0.1);
    --border-dark: rgba(255, 255, 255, 0.05);

    /* Typography */
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;

    /* Layout */
    --sidebar-width: 320px;
}

/* =========================================
   Reset & Base Styles
   ========================================= */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-main);
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-main);
    display: flex;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

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

/* =========================================
   Typography Utilities
   ========================================= */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    line-height: 1.2;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

/* =========================================
   Buttons & Links
   ========================================= */
.cta-button {
    display: inline-block;
    background: var(--accent-gradient);
    color: #ffffff;
    text-align: center;
    padding: 14px 28px;
    border-radius: 10px;
    font-weight: 700;
    font-family: var(--font-heading);
    box-shadow: 0 10px 25px var(--accent-glow);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
    border: none;
    cursor: pointer;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px var(--accent-glow);
    color: white; /* Ensure text stays white */
}

.cta-button:active {
    transform: translateY(-1px);
}

/* Base outline button for secondary actions */
.btn-outline {
    background: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
    padding: 12px 26px;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-outline:hover {
    background: var(--accent);
    color: white;
    box-shadow: 0 5px 15px var(--accent-glow);
}

/* =========================================
   Animations
   ========================================= */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Staggered animation delays for lists/grids */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }