/* ========================================
   LANDSTRAT — Swiss-Clean Aesthetic
   ======================================== */

:root {
    /* Colors */
    --black: #1a1a1a;
    --black-soft: #2d2d2d;
    --gray-dark: #4a4a4a;
    --gray: #7a7a7a;
    --gray-light: #b5b5b5;
    --white-off: #f7f7f5;
    --white: #ffffff;
    
    /* Typography */
    --font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    --space-xxl: 12rem;
    
    /* Layout */
    --container-max: 1200px;
    --container-padding: 2rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.4s ease;
    --transition-slow: 0.8s ease;
}

/* ========================================
   RESET & BASE
   ======================================== */

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

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

body {
    font-family: var(--font-family);
    font-weight: var(--font-weight-light);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--black);
    background-color: var(--white-off);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--black);
    color: var(--white);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover {
    opacity: 0.6;
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4 {
    font-weight: var(--font-weight-regular);
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    letter-spacing: -0.02em;
}

h3 {
    font-size: 1.125rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.01em;
    margin-bottom: var(--space-sm);
}

p {
    margin-bottom: 1em;
}

p:last-child {
    margin-bottom: 0;
}

/* ========================================
   LOGO
   ======================================== */

.logo {
    font-size: 1rem;
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.2em;
    text-transform: lowercase;
}

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

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--space-xl) 0;
    position: relative;
}

.section-header {
    margin-bottom: var(--space-lg);
}

.section-number {
    display: block;
    font-size: 0.75rem;
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.1em;
    color: var(--gray);
    margin-bottom: var(--space-xs);
}

/* ========================================
   NAVIGATION
   ======================================== */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--container-padding);
    background-color: transparent;
    transition: background-color var(--transition-base), padding var(--transition-base), color var(--transition-base);
}

.nav .logo,
.nav-links a {
    color: var(--white);
    transition: color var(--transition-base);
}

.nav-toggle span {
    background-color: var(--white);
    transition: background-color var(--transition-base), transform var(--transition-fast), opacity var(--transition-fast);
}

.nav.scrolled {
    background-color: var(--white-off);
    padding: var(--space-sm) var(--container-padding);
}

.nav.scrolled .logo,
.nav.scrolled .nav-links a {
    color: var(--black);
}

.nav.scrolled .nav-toggle span {
    background-color: var(--black);
}

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

.nav-links a {
    font-size: 0.875rem;
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.02em;
}

.nav-cta {
    padding: 0.6em 1.2em;
    background-color: var(--white);
    color: var(--black) !important;
    border-radius: 0;
    transition: background-color var(--transition-base), color var(--transition-base), transform var(--transition-fast);
}

.nav-cta:hover {
    opacity: 1 !important;
    background-color: var(--white-off);
    transform: translateY(-1px);
}

.nav.scrolled .nav-cta {
    background-color: var(--black);
    color: var(--white) !important;
}

.nav.scrolled .nav-cta:hover {
    background-color: var(--black-soft);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 10px;
    margin-right: -10px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 1px;
}

/* ========================================
   HERO
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.hero-bg-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, var(--white-off) 0%, #e8e8e4 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: var(--space-xl) var(--container-padding);
    max-width: 900px;
}

.hero h1 {
    margin-bottom: var(--space-md);
    color: var(--white);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s ease forwards;
    animation-delay: 0.2s;
}

.hero-sub {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--space-lg);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s ease forwards;
    animation-delay: 0.4s;
}

.hero .btn {
    background-color: var(--white);
    color: var(--black);
    border-color: var(--white);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s ease forwards;
    animation-delay: 0.6s;
}

.hero .btn:hover {
    background-color: var(--white-off);
    border-color: var(--white-off);
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    opacity: 0;
    animation: fadeIn 1s ease forwards;
    animation-delay: 1s;
}

.hero-scroll span {
    font-size: 0.75rem;
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.7);
}

.hero-scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.7) 0%, transparent 100%);
    animation: scrollPulse 2s ease-in-out infinite;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-block;
    padding: 1em 2.5em;
    font-size: 0.875rem;
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.05em;
    background-color: var(--black);
    color: var(--white);
    border: 1px solid var(--black);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn:hover {
    opacity: 1;
    background-color: transparent;
    color: var(--black);
}

/* ========================================
   SERVICES
   ======================================== */

.services {
    background-color: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.service-card {
    padding: var(--space-md) 0;
    border-top: 1px solid var(--gray-light);
}

.service-number {
    font-size: 0.75rem;
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.05em;
    color: var(--gray);
    margin-bottom: var(--space-sm);
}

.service-card h3 {
    margin-bottom: var(--space-sm);
}

.service-card p {
    color: var(--gray-dark);
    font-size: 0.9375rem;
}

/* ========================================
   PRICING
   ======================================== */

.pricing {
    background-color: var(--black);
    color: var(--white);
}

.pricing .section-number {
    color: var(--gray);
}

.pricing-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.pricing-main {
    padding-right: var(--space-lg);
    border-right: 1px solid var(--black-soft);
}

.price {
    display: flex;
    align-items: baseline;
    margin-bottom: var(--space-md);
}

.price-currency {
    font-size: 1.5rem;
    font-weight: var(--font-weight-light);
    margin-right: 0.25em;
}

.price-amount {
    font-size: clamp(4rem, 10vw, 7rem);
    font-weight: var(--font-weight-light);
    letter-spacing: -0.03em;
    line-height: 1;
}

.price-unit {
    font-size: 1.25rem;
    font-weight: var(--font-weight-light);
    color: var(--gray);
    margin-left: 0.5em;
}

.pricing-note {
    font-size: 0.9375rem;
    color: var(--gray-light);
    line-height: 1.8;
}

.pricing-details h3 {
    color: var(--white);
    margin-top: var(--space-md);
}

.pricing-details h3:first-child {
    margin-top: 0;
}

.pricing-details ul {
    margin-bottom: var(--space-md);
}

.pricing-details li {
    font-size: 0.9375rem;
    color: var(--gray-light);
    padding-left: 1.5em;
    position: relative;
    margin-bottom: 0.5em;
}

.pricing-details li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--gray);
}

.pricing-details p {
    font-size: 0.9375rem;
    color: var(--gray-light);
}

/* ========================================
   WORK
   ======================================== */

.work {
    background-color: var(--white-off);
}

.work-gallery {
    display: grid;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.work-item {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.work-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.work-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.work-image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
}

.work-label {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    font-size: 0.75rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.05em;
    color: var(--white);
    background-color: var(--black);
    padding: 0.4em 0.8em;
    z-index: 1;
}

.work-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #d4d4d0 0%, #c4c4c0 100%);
}

.work-caption {
    font-size: 0.875rem;
    color: var(--gray-dark);
}

/* Testimonials */
.testimonials {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--gray-light);
}

.testimonial blockquote p {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--black-soft);
    margin-bottom: var(--space-sm);
}

.testimonial cite {
    font-size: 0.875rem;
    font-style: normal;
    color: var(--gray);
}

/* Social Links */
.social-links {
    display: flex;
    gap: var(--space-md);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--gray-light);
}

.social-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    font-weight: var(--font-weight-regular);
    color: var(--gray-dark);
}

.social-link svg {
    transition: transform var(--transition-fast);
}

.social-link:hover svg {
    transform: scale(1.1);
}

/* ========================================
   ABOUT
   ======================================== */

.about {
    background-color: var(--white);
    position: relative;
    overflow: hidden;
}

.about-bg {
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    z-index: 0;
}

.about-bg-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, var(--white-off) 0%, #e8e8e4 100%);
}

.about .container {
    position: relative;
    z-index: 1;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.about-story p,
.about-equipment p {
    color: var(--gray-dark);
    font-size: 0.9375rem;
}

.about-story h3,
.about-equipment h3 {
    margin-top: var(--space-md);
}

.about-story h3:first-child,
.about-equipment h3:first-child {
    margin-top: 0;
}

.equipment-list li {
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--gray-light);
}

.equipment-list li:first-child {
    border-top: 1px solid var(--gray-light);
}

.equipment-list strong {
    display: block;
    font-weight: var(--font-weight-medium);
    margin-bottom: 0.25em;
}

.equipment-list span {
    font-size: 0.875rem;
    color: var(--gray);
}

.service-area {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--gray-light);
    max-width: 600px;
}

.service-area p {
    color: var(--gray-dark);
    font-size: 0.9375rem;
}

/* ========================================
   CONTACT
   ======================================== */

.contact {
    background-color: var(--white-off);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-xl);
}

.contact-intro p {
    font-size: 0.9375rem;
    color: var(--gray-dark);
    margin-bottom: var(--space-lg);
}

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

.contact-link {
    display: block;
}

.contact-label {
    display: block;
    font-size: 0.75rem;
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.1em;
    color: var(--gray);
    margin-bottom: 0.25em;
}

.contact-value {
    font-size: 1.125rem;
    font-weight: var(--font-weight-regular);
}

/* Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

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

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.75rem;
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.05em;
    color: var(--gray-dark);
    margin-bottom: 0.5em;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75em 0;
    font-size: 1rem;
    color: var(--black);
    border-bottom: 1px solid var(--gray-light);
    background-color: transparent;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--black);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    align-self: flex-start;
    margin-top: var(--space-sm);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background-color: var(--black);
    color: var(--white);
    padding: var(--space-xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.footer-brand .logo {
    display: inline-block;
    margin-bottom: var(--space-sm);
}

.footer-brand p {
    font-size: 0.875rem;
    color: var(--gray);
    line-height: 1.6;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75em;
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--gray-light);
}

.footer-links a:hover {
    color: var(--white);
    opacity: 1;
}

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

.footer-social a {
    color: var(--gray);
    transition: color var(--transition-fast);
}

.footer-social a:hover {
    color: var(--white);
    opacity: 1;
}

.footer-legal {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--black-soft);
}

.footer-legal p {
    font-size: 0.75rem;
    color: var(--gray);
    margin-bottom: 0.5em;
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

@keyframes scrollPulse {
    0%, 100% {
        opacity: 1;
        transform: scaleY(1);
    }
    50% {
        opacity: 0.5;
        transform: scaleY(0.8);
    }
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 1024px) {
    .services-grid {
        gap: var(--space-md);
    }
    
    .pricing-content {
        gap: var(--space-lg);
    }
    
    .pricing-main {
        padding-right: var(--space-md);
    }
    
    .about-content {
        gap: var(--space-lg);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1.5rem;
        --space-xl: 5rem;
    }
    
    /* Navigation */
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 280px;
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        gap: var(--space-md);
        padding: var(--space-lg);
        background-color: var(--white);
        transform: translateX(100%);
        transition: transform var(--transition-base);
    }
    
    .nav-links.open {
        transform: translateX(0);
    }
    
    .nav-links a {
        font-size: 1.25rem;
    }
    
    .nav-cta {
        margin-top: var(--space-md);
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .nav-toggle.open span:first-child {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.open span:last-child {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    /* Services */
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    /* Pricing */
    .pricing-content {
        grid-template-columns: 1fr;
    }
    
    .pricing-main {
        padding-right: 0;
        padding-bottom: var(--space-lg);
        border-right: none;
        border-bottom: 1px solid var(--black-soft);
    }
    
    /* Work */
    .work-images {
        grid-template-columns: 1fr;
    }
    
    .testimonials {
        grid-template-columns: 1fr;
    }
    
    /* About */
    .about-bg {
        display: none;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    /* Contact */
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-intro {
        order: 2;
    }
    
    .contact-form {
        order: 1;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }
    
    .hero-content {
        padding: var(--space-lg) var(--container-padding);
    }
    
    .price-amount {
        font-size: 4rem;
    }
    
    .social-links {
        flex-direction: column;
        gap: var(--space-sm);
    }
}