/* ========================================
   VARIABLES & RESET
   ======================================== */
:root {
    /* Colors - Inspired by Efficience Talents */
    --primary-blue: #1a5490;
    --secondary-blue: #2d6ba8;
    --accent-gold: #d4a574;
    --dark-navy: #0f2e4a;
    --light-blue: #e8f1f8;
    
    /* Neutrals */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Borders */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--gray-900);
    background-color: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   PROGRESS BAR
   ======================================== */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-gold), var(--primary-blue));
    z-index: 9999;
    transition: width 0.1s ease;
}

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.12);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-navy);
    cursor: pointer;
}

.nav-brand i {
    color: var(--primary-blue);
}

.nav-brand .accent {
    color: var(--accent-gold);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
}

.nav-link {
    color: var(--gray-800);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: width var(--transition-base);
}

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--gray-800);
    transition: all var(--transition-base);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f2e4a 0%, #1a5490 50%, #2d6ba8 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(212, 165, 116, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.03)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    padding: 2rem;
    animation: fadeInUp 1s ease-out;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 2rem;
}

.hero-badge i {
    color: var(--accent-gold);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    cursor: pointer;
}

.btn-primary {
    background: var(--accent-gold);
    color: var(--dark-navy);
    box-shadow: 0 10px 30px rgba(212, 165, 116, 0.3);
}

.btn-primary:hover {
    background: #c69563;
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(212, 165, 116, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.6);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   SECTIONS
   ======================================== */
.section {
    padding: var(--spacing-2xl) 2rem;
}

.section-gray {
    background: var(--gray-50);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-tag {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: var(--light-blue);
    color: var(--primary-blue);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--dark-navy);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto;
}

/* ========================================
   INTRO GRID
   ======================================== */
.intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.intro-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

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

.intro-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.intro-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.intro-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-navy);
    margin-bottom: 1rem;
}

.intro-card p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* ========================================
   ALERTS
   ======================================== */
.alert {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    margin-top: 2rem;
}

.alert i {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.alert h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.alert p {
    margin: 0;
    line-height: 1.6;
}

.alert-info {
    background: #eff6ff;
    border-left: 4px solid var(--info);
}

.alert-info i {
    color: var(--info);
}

.alert-success {
    background: #f0fdf4;
    border-left: 4px solid var(--success);
}

.alert-success i {
    color: var(--success);
}

.alert-warning {
    background: #fffbeb;
    border-left: 4px solid var(--warning);
}

.alert-warning i {
    color: var(--warning);
}

/* ========================================
   JOBS SECTION
   ======================================== */
.jobs-filter {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    color: var(--gray-700);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.filter-btn:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    background: var(--light-blue);
}

.filter-btn.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--white);
}

.jobs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.job-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.job-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-gold));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.job-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--light-blue);
}

.job-card:hover::before {
    transform: scaleX(1);
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.job-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
}

.job-badge {
    padding: 0.375rem 1rem;
    background: var(--light-blue);
    color: var(--primary-blue);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.job-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--dark-navy);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.job-summary {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.job-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.tag {
    padding: 0.375rem 0.75rem;
    background: var(--gray-100);
    color: var(--gray-700);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 500;
}

.job-footer {
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}

.job-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-blue);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
}

.job-link:hover {
    color: var(--accent-gold);
    gap: 0.75rem;
}

/* ========================================
   METHODOLOGY TIMELINE
   ======================================== */
.methodology-timeline {
    position: relative;
    padding: 2rem 0;
}

.methodology-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-blue), var(--accent-gold));
}

.methodology-step,
.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: 3rem;
}

.step-number,
.timeline-number {
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(26, 84, 144, 0.3);
    z-index: 1;
}

.step-content,
.timeline-content {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.methodology-step:hover .step-content,
.timeline-item:hover .timeline-content {
    transform: translateX(10px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.step-content h3,
.timeline-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-navy);
    margin-bottom: 1rem;
}

.step-content p,
.timeline-content p {
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: 0;
}

.timeline-content ul {
    list-style: none;
    padding: 0;
}

.timeline-content li {
    padding-left: 1.5rem;
    position: relative;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.timeline-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-weight: 700;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--dark-navy);
    color: var(--white);
    padding: var(--spacing-2xl) 2rem var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--accent-gold);
    transform: translateY(-3px);
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-links ul,
.footer-contact ul {
    list-style: none;
    padding: 0;
}

.footer-links li,
.footer-contact li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact i {
    color: var(--accent-gold);
    width: 20px;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.footer-bottom p {
    margin: 0.5rem 0;
}

/* ========================================
   BACK TO TOP
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--accent-gold);
    color: var(--white);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-blue);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-base);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .jobs-grid {
        grid-template-columns: 1fr;
    }
    
    .methodology-timeline::before {
        left: 15px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-number {
        width: 40px;
        height: 40px;
        font-size: 1.125rem;
    }
    
    .intro-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .section {
        padding: var(--spacing-xl) 1rem;
    }
    
    .nav-container {
        padding: 1rem;
    }
    
    .job-card {
        padding: 1.5rem;
    }
    
    .timeline-content {
        padding: 1.5rem;
    }
}