/* ==========================================================================
   LAYOUT STRUCTURE
   ========================================================================== */

/* Container */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--space-md);
}

/* Sections */
.section-padding {
    padding: var(--space-xxl) 0;
}

.section-bg-light { background-color: var(--bg-alt); }
.section-bg-dark { background-color: var(--bg-dark); color: var(--text-white); }
.section-bg-dark h2, .section-bg-dark h3 { color: var(--text-white); }
.section-bg-dark .text-light { color: #cbd5e1; }

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-lg);
}

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

/* Flex Utilities */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: transparent;
    z-index: 1000;
    transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

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

header.scrolled .logo {
    color: var(--text-dark);
}

.logo i {
    color: var(--secondary);
    font-size: 1.75rem;
}

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

/* Desktop Navigation */
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-links a {
    color: var(--text-white);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: color var(--transition-normal);
}

header.scrolled .nav-links a {
    color: var(--text-main);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--secondary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary);
    transition: width var(--transition-normal);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

/* Nav Link Button exception */
.nav-links .btn::after {
    display: none;
}
.nav-links .btn {
    color: var(--text-white) !important;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-white);
}

header.scrolled .mobile-menu-btn {
    color: var(--text-dark);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    background-color: var(--bg-darker);
    color: #cbd5e1;
    padding-top: var(--space-xxl);
}

.footer-top {
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col h3 {
    color: var(--text-white);
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--secondary);
}

.footer-col p {
    margin-bottom: var(--space-md);
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: #94a3b8;
    transition: color var(--transition-fast), transform var(--transition-fast);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--secondary);
    transform: translateX(5px);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.footer-contact i {
    color: var(--secondary);
    margin-top: 0.25rem;
}

.social-links {
    display: flex;
    gap: var(--space-sm);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255,255,255,0.05);
    border-radius: 50%;
    color: var(--text-white);
    transition: all var(--transition-normal);
}

.social-links a:hover {
    background-color: var(--secondary);
    transform: translateY(-3px);
}

.footer-bottom {
    padding: var(--space-md) 0;
    text-align: center;
    font-size: 0.875rem;
    color: #64748b;
}

/* Page Header (Inner pages) */
.page-header {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
    color: var(--text-white);
    text-align: center;
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><polygon fill="rgba(16, 185, 129, 0.05)" points="0,100 100,0 100,100"/></svg>');
}

.page-header h1 {
    color: var(--text-white);
    margin-bottom: var(--space-xs);
}

.page-header p {
    font-size: 1.25rem;
    color: #cbd5e1;
    max-width: 600px;
    margin: 0 auto;
}