/* ==========================================================================
   LearnCampus - Modern Flat UI Education System
   ========================================================================== */

/* Local Fonts - Inter & Outfit */
@import url('fonts.css');

:root {
    /* Color Palette */
    --color-primary: #3b82f6;      /* Sky Blue */
    --color-primary-light: #eff6ff;
    
    --color-yellow: #facc15;       /* Cheerful Yellow */
    --color-yellow-light: #fefce8;
    
    --color-coral: #f43f5e;        /* Flat Coral */
    --color-coral-light: #fff1f2;
    
    --color-mint: #10b981;         /* Mint Green */
    --color-mint-light: #ecfdf5;
    
    --color-navy: #1e3a8a;         /* Academic Navy */
    
    --color-orange: #f97316;       /* Playful Orange */
    --color-purple: #8b5cf6;       /* Bright Purple */
    --color-teal: #14b8a6;         /* Teal Highlights */
    
    --color-white: #ffffff;
    --color-light: #f8fafc;
    --color-muted: #64748b;
    --color-border: #e2e8f0;

    /* Typography */
    --font-body: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    
    /* Box Shadow */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-pill: 9999px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Styles */
body {
    font-family: var(--font-body);
    color: var(--color-navy);
    background-color: var(--color-light);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-navy);
    line-height: 1.2;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

a:hover {
    color: var(--color-navy);
}

/* Utilities */
.text-primary { color: var(--color-primary) !important; }
.text-yellow { color: var(--color-yellow) !important; }
.text-coral { color: var(--color-coral) !important; }
.text-mint { color: var(--color-mint) !important; }
.text-navy { color: var(--color-navy) !important; }
.text-muted { color: var(--color-muted) !important; }

.bg-primary { background-color: var(--color-primary) !important; }
.bg-sky-light { background-color: var(--color-primary-light) !important; }
.bg-yellow { background-color: var(--color-yellow) !important; }
.bg-yellow-light { background-color: var(--color-yellow-light) !important; }
.bg-coral { background-color: var(--color-coral) !important; }
.bg-coral-light { background-color: var(--color-coral-light) !important; }
.bg-mint { background-color: var(--color-mint) !important; }
.bg-mint-light { background-color: var(--color-mint-light) !important; }
.bg-navy { background-color: var(--color-navy) !important; }

.border-primary { border-color: var(--color-primary) !important; }
.border-light { border-color: var(--color-border) !important; }

.rounded-4 { border-radius: var(--radius-lg) !important; }
.rounded-5 { border-radius: var(--radius-xl) !important; }

.hover-bg-primary:hover { background-color: var(--color-primary) !important; color: var(--color-white) !important; }
.hover-bg-navy:hover { background-color: var(--color-navy) !important; color: var(--color-white) !important; }
.hover-text-primary:hover { color: var(--color-primary) !important; }
.hover-text-white:hover { color: var(--color-white) !important; }
.hover-text-warning:hover { color: var(--color-yellow) !important; }

.z-index-1 { z-index: 1; }
.z-index-n1 { z-index: -1; }

.max-w-700 { max-width: 700px; }

/* Custom Paddings not in standard bootstrap */
.py-6 { padding-top: 5rem !important; padding-bottom: 5rem !important; }
.py-7 { padding-top: 7rem !important; padding-bottom: 7rem !important; }

/* Buttons */
.btn {
    font-family: var(--font-heading);
    font-weight: 600;
    transition: all var(--transition-normal);
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--color-navy);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

/* Navigation */
.flat-nav {
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95) !important;
    border-bottom: 1px solid var(--color-border);
}

.flat-nav .nav-link {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-navy);
    padding: 0.5rem 1rem !important;
    position: relative;
}

.flat-nav .nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    bottom: 0;
    left: 50%;
    background-color: var(--color-primary);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
    border-radius: var(--radius-pill);
}

.flat-nav .nav-link:hover::after,
.flat-nav .nav-link.active::after {
    width: 80%;
}

.flat-dropdown {
    border-radius: var(--radius-md);
    padding: 1rem;
    min-width: 200px;
}

.flat-dropdown .dropdown-item {
    font-family: var(--font-heading);
    font-weight: 500;
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    transition: all var(--transition-fast);
}

.flat-dropdown .dropdown-item:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    transform: translateX(5px);
}

/* Cards & Interactions */
.flat-card {
    transition: all var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg) !important;
}

/* Footer */
.footer-links a {
    transition: all var(--transition-fast);
    display: inline-block;
}
.footer-links a:hover {
    transform: translateX(5px);
}

/* Form Controls */
.form-control, .form-select {
    font-family: var(--font-body);
}

.form-control:focus, .form-select:focus {
    box-shadow: 0 0 0 4px var(--color-primary-light);
    border-color: var(--color-primary);
}

/* Helper animation classes */
.animation-slide-up {
    opacity: 0;
    transform: translateY(30px);
}

/* Responsive Overrides */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background-color: var(--color-white);
        padding: 1rem;
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-lg);
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        margin: 0 15px;
        z-index: 1000;
    }
    
    .flat-dropdown {
        background-color: var(--color-light) !important;
        box-shadow: none !important;
        border: none !important;
        padding: 0.5rem;
        margin-top: 0.5rem;
        min-width: 100%;
        border-radius: var(--radius-sm);
    }
    
    .flat-nav .nav-link {
        padding: 0.8rem 1rem !important;
        text-align: left;
    }
    
    .flat-nav .nav-link::after {
        left: 1rem;
        transform: none;
        bottom: 5px;
    }
    
    .flat-nav .nav-link:hover::after,
    .flat-nav .nav-link.active::after {
        width: 40px;
    }
    
    .flat-dropdown .dropdown-item {
        padding: 0.5rem 1rem;
        font-size: 0.95rem;
    }
}

/* Lenis required CSS */
html.lenis, html.lenis body { height: auto; width: 100vw; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }
.lenis.lenis-scrolling iframe { pointer-events: none; }