/* CSS Reset & Global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    color: var(--text-primary);
    background-color: var(--bg-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    line-height: 1.2;
    font-weight: 700;
}

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

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

p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* Layout Utilities */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 6rem 0;
}

.section-light {
    background-color: var(--bg-neutral);
}

.section-dark {
    position: relative;
    background-color: var(--navy-dark);
    color: var(--text-primary);
    background-image: radial-gradient(circle at 50% 10%, rgba(255, 138, 0, 0.15) 0%, transparent 50%);
    overflow: hidden;
}

.section-dark h1, .section-dark h2, .section-dark h3, .section-dark p {
    color: var(--text-primary);
}

.section-dark p {
    opacity: 0.9;
}

/* Button Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 2rem;
    border-radius: 9999px;
    font-weight: 600;
    font-family: var(--font-body);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #FFFFFF !important;
    box-shadow: 0 4px 14px 0 rgba(255, 138, 0, 0.39);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(255, 138, 0, 0.5);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-neutral);
    border-color: var(--text-secondary);
}

.section-dark .btn-secondary {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.section-dark .btn-secondary:hover {
    background-color: var(--bg-neutral);
}

.btn-outline-primary {
    background-color: transparent;
    color: #FFFFFF;
    border: 1px solid var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: rgba(255, 138, 0, 0.1);
    border-color: var(--primary-hover);
}

/* Cards */
.card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    transition: all var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.card-icon {
    color: var(--text-primary);
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

/* Header & Navigation */
.header {
    background: var(--bg-white);
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    border-bottom: 1px solid transparent;
    transition: all var(--transition-fast);
}

.header.scrolled {
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-sm);
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(8px);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    color: var(--primary-color);
}

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

.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-link:hover {
    color: var(--primary-color);
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--bg-white);
    min-width: 240px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-item {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.dropdown-item:hover {
    background: var(--bg-neutral);
    color: var(--primary-color);
}

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

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

@keyframes pulse-glow {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 138, 0, 0.4);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(255, 138, 0, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 138, 0, 0);
    }
}

.btn-pulse {
    animation: pulse-glow 2s infinite;
    border-color: var(--primary-color) !important;
}

.btn-pulse:hover {
    background-color: rgba(255, 138, 0, 0.1) !important;
    animation: none;
    transform: scale(1.05);
}

/* Utility classes */
.text-center { text-align: center; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-6 { margin-bottom: 3rem; }
.mt-4 { margin-top: 2rem; }

/* Grid */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 768px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none; /* simple mobile trick for now, we can add a hamburger if needed */
    }
}