/* ============================================
   Newformula Travel
   Bauhaus-inspired, Apple-clean, Jony Ive feel
   System font (San Francisco on Apple devices)
   ============================================ */

:root {
    --color-bg: #f5f5f3;
    --color-surface: #ffffff;
    --color-text: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-text-tertiary: #86868b;
    --color-accent: #c84b31;
    --color-accent-hover: #a83d28;
    --color-border: #d2d2d7;
    --color-border-light: #e8e8ed;
    --color-nav-bg: rgba(245, 245, 243, 0.8);

    --font-system: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;

    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 3rem;
    --space-xl: 5rem;
    --space-2xl: 8rem;

    --max-width: 960px;
    --nav-height: 52px;
}

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-system);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    font-weight: 400;
    letter-spacing: -0.01em;
}

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

/* ============================================
   Navigation
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--nav-height);
    background: var(--color-nav-bg);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border-light);
    transition: transform 0.3s ease;
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: var(--space-md);
}

.nav-links a {
    font-size: 0.8125rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 36px;
    height: 36px;
    position: relative;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 1.5px;
    background: var(--color-text);
    transition: all 0.3s ease;
    transform-origin: center;
}

.nav-toggle.active span:first-child {
    transform: rotate(45deg) translate(2.5px, 2.5px);
}

.nav-toggle.active span:last-child {
    transform: rotate(-45deg) translate(2.5px, -2.5px);
}

/* ============================================
   Hero
   ============================================ */

.hero {
    padding-top: calc(var(--nav-height) + var(--space-xl));
    padding-bottom: var(--space-lg);
}

.hero-layout {
    display: flex;
    align-items: flex-start;
    gap: var(--space-xl);
}

.hero-content {
    max-width: 640px;
    flex: 1;
}

.hero-portrait {
    flex-shrink: 0;
    padding-top: 0.5rem;
}

.hero-portrait img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.08;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    line-height: 1.4;
    letter-spacing: -0.01em;
    margin-bottom: var(--space-md);
}

.hero-divider {
    width: 40px;
    height: 3px;
    background: var(--color-accent);
    margin-bottom: var(--space-md);
}

.hero-body {
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.hero-cta {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-accent);
    text-decoration: none;
    letter-spacing: 0.02em;
    padding-bottom: 2px;
    border-bottom: 1px solid var(--color-accent);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.hero-cta:hover {
    color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
}

/* ============================================
   Section images
   ============================================ */

.section-image {
    padding: var(--space-lg) 0;
}

.section-image img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    border-radius: 16px;
    display: block;
}

/* ============================================
   Section titles
   ============================================ */

.section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-lg);
}

/* ============================================
   Services
   ============================================ */

.services {
    padding: var(--space-2xl) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.service-card {
    background: var(--color-surface);
    border-radius: 16px;
    padding: var(--space-lg);
    border: 1px solid var(--color-border-light);
    transition: border-color 0.2s ease;
}

.service-card:hover {
    border-color: var(--color-border);
}

.service-number {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    font-variant-numeric: tabular-nums;
}

.service-title {
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}

.service-body {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* ============================================
   Track Record
   ============================================ */

.track-record {
    padding: var(--space-2xl) 0;
}

.record-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.record-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: var(--space-lg);
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-border-light);
}

.record-item:last-child {
    border-bottom: 1px solid var(--color-border-light);
}

.record-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.record-years {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    font-variant-numeric: tabular-nums;
}

.record-role {
    font-size: 0.8125rem;
    color: var(--color-text-tertiary);
}

.record-title {
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.record-link {
    color: var(--color-text);
    text-decoration: none;
    border-bottom: 1px solid var(--color-border);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.record-link:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.record-body {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* ============================================
   Contact
   ============================================ */

.contact {
    padding: var(--space-2xl) 0;
}

.contact-body {
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    max-width: 560px;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.2s ease;
}

.contact-link:hover {
    color: var(--color-accent);
}

.contact-link svg {
    flex-shrink: 0;
}

/* ============================================
   Footer
   ============================================ */

.footer {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-border-light);
}

.footer p {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 768px) {
    :root {
        --space-2xl: 5rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--color-nav-bg);
        backdrop-filter: saturate(180%) blur(20px);
        -webkit-backdrop-filter: saturate(180%) blur(20px);
        flex-direction: column;
        padding: var(--space-md);
        border-bottom: 1px solid var(--color-border-light);
        gap: var(--space-sm);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-layout {
        flex-direction: column-reverse;
        gap: var(--space-lg);
    }

    .hero-portrait img {
        width: 140px;
        height: 140px;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .section-image img {
        height: 200px;
        border-radius: 12px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .record-item {
        grid-template-columns: 1fr;
        gap: var(--space-xs);
    }

    .record-meta {
        flex-direction: row;
        gap: var(--space-sm);
        align-items: baseline;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.875rem;
    }

    .service-card {
        padding: var(--space-md);
    }
}

/* ============================================
   Animations
   ============================================ */

@media (prefers-reduced-motion: no-preference) {
    .fade-in {
        opacity: 0;
        transform: translateY(12px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

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