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

:root {
    --navy-900: #0f172a;
    --navy-800: #1e293b;
    --navy-700: #334155;
    --navy-600: #475569;
    --blue-600: #2563eb;
    --blue-500: #3b82f6;
    --blue-400: #60a5fa;
    --gold-500: #eab308;
    --gold-600: #ca8a04;
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --white: #ffffff;
    --success: #10b981;
    --warning: #f59e0b;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--navy-900);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    line-height: 1.2;
}

/* Notice Banner */
.notice-banner {
    background: linear-gradient(135deg, var(--warning) 0%, var(--gold-600) 100%);
    color: var(--white);
    padding: 1rem 2rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.9rem;
    position: sticky;
    top: 0;
    z-index: 1001;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.notice-banner strong {
    font-weight: 800;
}

/* Navigation */
nav {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--slate-200);
    z-index: 1000;
    padding: 1.2rem 3rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--navy-900);
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--navy-700);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--blue-600);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--blue-600);
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 100%);
    color: var(--white);
    padding: 6rem 3rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero:before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, transparent 0%, rgba(37, 99, 235, 0.1) 100%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-label {
    display: inline-block;
    background: rgba(37, 99, 235, 0.2);
    color: var(--blue-400);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 2rem;
    border: 1px solid rgba(37, 99, 235, 0.3);
}

.hero h1 {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.4rem;
    color: var(--slate-300);
    max-width: 800px;
    line-height: 1.8;
    margin-bottom: 3rem;
}

.hero-meta {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    font-size: 1rem;
    color: var(--slate-300);
}

.hero-meta-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.hero-meta-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

/* Section Styles */
section {
    padding: 6rem 3rem;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-label {
    display: inline-block;
    color: var(--blue-600);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 3.5rem;
    color: var(--navy-900);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.section-description {
    font-size: 1.2rem;
    color: var(--navy-600);
    max-width: 700px;
    line-height: 1.8;
    margin-bottom: 4rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.stat-card {
    background: var(--slate-50);
    border: 1px solid var(--slate-200);
    border-radius: 16px;
    padding: 2.5rem;
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
    border-color: var(--blue-400);
}

.stat-number {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 900;
    color: var(--blue-600);
    line-height: 1;
    margin-bottom: 0.5rem;
    display: block;
}

.stat-label {
    color: var(--navy-700);
    font-size: 1rem;
    font-weight: 600;
}

.stat-sublabel {
    color: var(--navy-600);
    font-size: 0.85rem;
    margin-top: 0.3rem;
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.content-main {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--navy-700);
}

.content-main p {
    margin-bottom: 1.5rem;
}

.content-main strong {
    color: var(--navy-900);
    font-weight: 600;
}

.content-sidebar {
    position: sticky;
    top: 120px;
}

.sidebar-box {
    background: linear-gradient(135deg, var(--slate-50) 0%, var(--slate-100) 100%);
    border: 1px solid var(--slate-200);
    border-radius: 16px;
    padding: 2.5rem;
    margin-bottom: 2rem;
}

.sidebar-box h4 {
    font-size: 1.3rem;
    color: var(--navy-900);
    margin-bottom: 1.5rem;
}

.sidebar-list {
    list-style: none;
}

.sidebar-list li {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--slate-200);
    color: var(--navy-700);
    font-size: 0.95rem;
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
}

.sidebar-list li:last-child {
    border-bottom: none;
}

.sidebar-list li:before {
    content: '→';
    color: var(--blue-600);
    font-weight: 700;
    flex-shrink: 0;
}

/* Case Study Section */
.case-study {
    background: var(--navy-900);
    color: var(--white);
}

.case-study .section-title {
    color: var(--white);
}

.case-study .section-description {
    color: var(--slate-300);
}

.case-header {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 3rem;
    margin-bottom: 3rem;
}

.case-header h3 {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.case-header .company-meta {
    display: flex;
    gap: 3rem;
    flex-wrap: wrap;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.company-meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.company-meta-label {
    font-size: 0.8rem;
    color: var(--slate-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

.company-meta-value {
    font-size: 1.1rem;
    color: var(--white);
    font-weight: 600;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.metric-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
}

.metric-value {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--gold-500);
    line-height: 1;
    margin-bottom: 0.5rem;
    display: block;
}

.metric-label {
    color: var(--slate-300);
    font-size: 0.9rem;
}

.case-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.case-section {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 2.5rem;
}

.case-section h4 {
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.case-section-icon {
    width: 40px;
    height: 40px;
    background: rgba(234, 179, 8, 0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.case-section p {
    color: var(--slate-300);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.case-section ul {
    list-style: none;
    margin-top: 1rem;
}

.case-section li {
    padding: 0.6rem 0;
    padding-left: 1.5rem;
    color: var(--slate-300);
    position: relative;
}

.case-section li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 700;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 3rem;
}

.timeline:before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--blue-600), var(--blue-400));
}

.timeline-item {
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item:before {
    content: '';
    position: absolute;
    left: -3.5rem;
    top: 0;
    width: 14px;
    height: 14px;
    background: var(--blue-600);
    border: 3px solid var(--white);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.timeline-period {
    display: inline-block;
    background: var(--blue-600);
    color: var(--white);
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.timeline-item h3 {
    font-size: 1.8rem;
    color: var(--navy-900);
    margin-bottom: 0.5rem;
}

.timeline-item h4 {
    font-size: 1.1rem;
    color: var(--blue-600);
    margin-bottom: 1rem;
    font-weight: 600;
}

.timeline-item p {
    color: var(--navy-600);
    line-height: 1.8;
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.skill-card {
    background: var(--slate-50);
    border: 1px solid var(--slate-200);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
    border-color: var(--blue-400);
}

.skill-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.skill-icon {
    width: 48px;
    height: 48px;
    background: var(--blue-600);
    color: var(--white);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.skill-card h4 {
    font-size: 1.2rem;
    color: var(--navy-900);
}

.skill-list {
    list-style: none;
}

.skill-list li {
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--slate-200);
    color: var(--navy-700);
    font-size: 0.9rem;
}

.skill-list li:last-child {
    border-bottom: none;
}

/* Contact CTA */
.cta {
    background: linear-gradient(135deg, var(--blue-600) 0%, var(--blue-500) 100%);
    color: var(--white);
    padding: 6rem 3rem;
    text-align: center;
}

.cta h2 {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 2rem;
}

.cta p {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1.2rem 3rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--white);
    color: var(--blue-600);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 4rem auto 0;
}

.contact-card {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 2rem;
    text-align: left;
}

.contact-card-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.contact-card h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.contact-card p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Footer */
footer {
    background: var(--navy-900);
    color: var(--slate-400);
    padding: 2rem 3rem;
    text-align: center;
    font-size: 0.9rem;
}

/* Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3.5rem;
    }
    
    .section-title {
        font-size: 2.8rem;
    }

    .content-grid,
    .case-content {
        grid-template-columns: 1fr;
    }

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

    .timeline {
        padding-left: 2.5rem;
    }
}

@media (max-width: 768px) {
    nav {
        padding: 1rem 1.5rem;
    }

    .nav-links {
        display: none;
    }

    section {
        padding: 4rem 1.5rem;
    }

    .hero {
        padding: 4rem 1.5rem 3rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .cta h2 {
        font-size: 2.2rem;
    }

    .skills-grid,
    .stats-grid {
        grid-template-columns: 1fr;
    }

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

    .cta-buttons {
        flex-direction: column;
    }
}