/* ============================================
   MODERN PAGES — Premium Agency Website
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors - Light Theme */
    --color-bg: #fafafa;
    --color-bg-alt: #f0f0f0;
    --color-bg-elevated: #ffffff;
    --color-text: #0a0a0a;
    --color-text-muted: #666666;
    --color-text-subtle: #999999;
    --color-accent: #0a0a0a;
    --color-accent-hover: #333333;
    --color-border: #e5e5e5;
    --color-border-light: #f0f0f0;
    
    /* Typography */
    --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 600ms cubic-bezier(0.22, 1, 0.36, 1);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
}

/* Dark Theme */
[data-theme="dark"] {
    --color-bg: #0a0a0a;
    --color-bg-alt: #141414;
    --color-bg-elevated: #1a1a1a;
    --color-text: #fafafa;
    --color-text-muted: #a3a3a3;
    --color-text-subtle: #737373;
    --color-accent: #fafafa;
    --color-accent-hover: #e5e5e5;
    --color-border: #262626;
    --color-border-light: #1a1a1a;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
}

/* ============================================
   Base Styles
   ============================================ */

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    transition: background-color var(--transition-slow), color var(--transition-slow);
    overflow-x: hidden;
}

::selection {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

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

a {
    color: inherit;
    text-decoration: none;
}

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

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

ul, ol {
    list-style: none;
}

/* ============================================
   Utility Classes
   ============================================ */

.section-label {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    position: relative;
    padding-left: 2rem;
}

.section-label::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1.25rem;
    height: 1px;
    background-color: var(--color-text-muted);
}

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

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    background-color: transparent;
    transition: background-color var(--transition-base), 
                box-shadow var(--transition-base),
                padding var(--transition-base);
}

.nav--scrolled {
    background-color: var(--color-bg);
    box-shadow: var(--shadow-sm);
    padding: var(--space-sm) 0;
}

.nav__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav__logo-text {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav__links {
    display: none;
    align-items: center;
    gap: var(--space-xl);
}

@media (min-width: 768px) {
    .nav__links {
        display: flex;
    }
}

.nav__link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav__link:hover {
    color: var(--color-text);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__link--cta {
    padding: var(--space-sm) var(--space-lg);
    background-color: var(--color-accent);
    color: var(--color-bg) !important;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.nav__link--cta::after {
    display: none;
}

.nav__link--cta:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-1px);
}

.nav__toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: var(--space-sm);
    margin-right: calc(var(--space-sm) * -1);
}

@media (min-width: 768px) {
    .nav__toggle {
        display: none;
    }
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav__toggle--active span:first-child {
    transform: translateY(4px) rotate(45deg);
}

.nav__toggle--active span:last-child {
    transform: translateY(-4px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 999;
    background-color: var(--color-bg);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-menu--active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu__content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    gap: var(--space-xl);
}

.mobile-menu__link {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-text);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-base), transform var(--transition-base), color var(--transition-fast);
}

.mobile-menu--active .mobile-menu__link {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu--active .mobile-menu__link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu--active .mobile-menu__link:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu--active .mobile-menu__link:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu--active .mobile-menu__link:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu--active .mobile-menu__link:nth-child(5) { transition-delay: 0.3s; }

.mobile-menu__link:hover {
    color: var(--color-text-muted);
}

.mobile-menu__link--cta {
    margin-top: var(--space-lg);
    padding: var(--space-md) var(--space-2xl);
    background-color: var(--color-accent);
    color: var(--color-bg) !important;
    border-radius: var(--radius-sm);
    font-size: 1rem;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    z-index: 100;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.theme-toggle:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.theme-toggle__icon {
    width: 20px;
    height: 20px;
    transition: opacity var(--transition-fast), transform var(--transition-base);
}

.theme-toggle__icon--sun {
    position: absolute;
}

.theme-toggle__icon--moon {
    position: absolute;
    opacity: 0;
    transform: rotate(-90deg);
}

[data-theme="dark"] .theme-toggle__icon--sun {
    opacity: 0;
    transform: rotate(90deg);
}

[data-theme="dark"] .theme-toggle__icon--moon {
    opacity: 1;
    transform: rotate(0);
}

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

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    padding: var(--space-5xl) 0 var(--space-4xl);
    overflow: hidden;
}

.hero__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    align-items: start;
}

.hero__content {
    position: relative;
    z-index: 2;
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 7vw, 5rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-lg);
    white-space: nowrap;
}

.hero__title-line {
    display: inline;
    opacity: 0;
    transform: translateY(40px);
    animation: heroTitleIn 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.hero__title-line:nth-child(2) {
    animation-delay: 0.1s;
}

.hero__title-line--accent {
    color: var(--color-text-muted);
}

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

.hero__subtitle {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--color-text-muted);
    max-width: 480px;
    margin-bottom: var(--space-2xl);
    opacity: 0;
    transform: translateY(20px);
    animation: heroFadeIn 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.3s forwards;
}

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

.hero__cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    opacity: 0;
    transform: translateY(20px);
    animation: heroFadeIn 0.6s cubic-bezier(0.22, 1, 0.36, 1) 0.4s forwards;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.btn--primary {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

.btn--primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--primary:hover svg {
    transform: translateX(4px);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn--secondary:hover {
    background-color: var(--color-bg-alt);
    border-color: var(--color-text-muted);
}

.btn--full {
    width: 100%;
}

/* Hero Visual — Carousel */
.hero__visual {
    display: block;
    position: relative;
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    overflow: hidden;
}

.carousel {
    position: relative;
    padding: var(--space-md) 0 0;
    opacity: 0;
    animation: carouselReveal 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.5s forwards;
}

@keyframes carouselReveal {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Viewport: the reference box for slide sizing */
.carousel__viewport {
    position: relative;
    width: 72vw;
    max-width: 540px;
    aspect-ratio: 4 / 3;
    margin: 0 auto;
    overflow: visible;
    perspective: 1200px;
    transform-style: preserve-3d;
}

.carousel__track {
    position: relative;
    width: 100%;
    height: 100%;
    outline: none;
    cursor: grab;
    touch-action: pan-y;
    transform-style: preserve-3d;
}

.carousel__track:active {
    cursor: grabbing;
}

/* ---- Slides ---- */
.carousel__slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    filter: blur(10px);
    transform: scale(0.75);
    z-index: 1;
    pointer-events: none;
    transition: transform 650ms cubic-bezier(0.22, 1, 0.36, 1),
                opacity 500ms cubic-bezier(0.22, 1, 0.36, 1) 80ms,
                filter 650ms cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform, opacity;
}

/* Active (center) — in front */
.carousel__slide.is-active {
    opacity: 1;
    filter: blur(0);
    transform: translateX(0) translateZ(20px) scale(1);
    z-index: 4;
    pointer-events: auto;
}

/* Previous (left peek) — closer and slightly behind */
.carousel__slide.is-prev {
    opacity: 0.45;
    filter: blur(5px);
    transform: translateX(-72%) translateZ(-30px) scale(0.88);
    z-index: 2;
}

/* Next (right peek) — closer and slightly behind */
.carousel__slide.is-next {
    opacity: 0.45;
    filter: blur(5px);
    transform: translateX(72%) translateZ(-30px) scale(0.88);
    z-index: 2;
}

/* Outer left — more blurred and faded */
.carousel__slide.is-prev-prev {
    opacity: 0.2;
    filter: blur(12px);
    transform: translateX(-144%) translateZ(-70px) scale(0.78);
    z-index: 1;
}

/* Outer right — more blurred and faded */
.carousel__slide.is-next-next {
    opacity: 0.2;
    filter: blur(12px);
    transform: translateX(144%) translateZ(-70px) scale(0.78);
    z-index: 1;
}

/* Tablet */
@media (min-width: 768px) {
    .carousel__viewport {
        width: 50vw;
    }
    .carousel__slide.is-prev {
        transform: translateX(-78%) translateZ(-30px) scale(0.9);
        opacity: 0.5;
    }
    .carousel__slide.is-next {
        transform: translateX(78%) translateZ(-30px) scale(0.9);
        opacity: 0.5;
    }
    .carousel__slide.is-prev-prev {
        transform: translateX(-156%) translateZ(-70px) scale(0.82);
        opacity: 0.22;
    }
    .carousel__slide.is-next-next {
        transform: translateX(156%) translateZ(-70px) scale(0.82);
        opacity: 0.22;
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .carousel__viewport {
        width: 38vw;
    }
    .carousel__slide.is-prev {
        transform: translateX(-82%) translateZ(-30px) scale(0.9);
    }
    .carousel__slide.is-next {
        transform: translateX(82%) translateZ(-30px) scale(0.9);
    }
    .carousel__slide.is-prev-prev {
        transform: translateX(-164%) translateZ(-70px) scale(0.82);
    }
    .carousel__slide.is-next-next {
        transform: translateX(164%) translateZ(-70px) scale(0.82);
    }
}

/* ---- Browser-frame card ---- */
.carousel__card {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
}

.carousel__browser-bar {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 8px 12px;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.carousel__traffic-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
}

.carousel__traffic-dot:nth-child(1) { background: #ff5f57; }
.carousel__traffic-dot:nth-child(2) { background: #ffbd2e; }
.carousel__traffic-dot:nth-child(3) { background: #28ca41; }

.carousel__url {
    flex: 1;
    text-align: center;
    font-size: 0.625rem;
    color: var(--color-text-subtle);
    font-family: var(--font-body);
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    padding: 2px 8px;
    margin-left: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.carousel__screen {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.carousel__screen svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* ---- Controls ---- */
.carousel__controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    padding-top: var(--space-xl);
    margin-bottom: var(--space-5xl);
}

.carousel__btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text);
    transition: background-color var(--transition-fast),
                border-color var(--transition-fast),
                transform var(--transition-fast);
    cursor: pointer;
    flex-shrink: 0;
}

.carousel__btn:hover {
    background: var(--color-bg-alt);
    border-color: var(--color-text-subtle);
    transform: scale(1.08);
}

.carousel__btn:active {
    transform: scale(0.95);
}

.carousel__btn svg {
    width: 18px;
    height: 18px;
}

.carousel__indicators {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.carousel__dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-border);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: background-color var(--transition-fast),
                transform var(--transition-fast);
}

.carousel__dot:hover {
    background: var(--color-text-subtle);
}

.carousel__dot--active {
    background: var(--color-accent);
    transform: scale(1.3);
}

/* ---- Focus states ---- */
.carousel__btn:focus-visible,
.carousel__dot:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.carousel__track:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
    border-radius: var(--radius-md);
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
    .carousel {
        animation: none;
        opacity: 1;
    }
    .carousel__slide {
        transition-duration: 0.01ms !important;
    }
}

/* Hero Scroll Indicator — sits below carousel controls with clear gap */
.hero__scroll {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    opacity: 0;
    animation: heroFadeIn 0.6s cubic-bezier(0.22, 1, 0.36, 1) 1s forwards;
}

.hero__scroll span {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-subtle);
}

.hero__scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--color-text-subtle), transparent);
    position: relative;
    overflow: hidden;
}

.hero__scroll-line::after {
    content: '';
    position: absolute;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent, var(--color-accent), transparent);
    animation: scrollLine 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes scrollLine {
    to {
        top: 100%;
    }
}

/* ============================================
   Credibility Section
   ============================================ */

.credibility {
    padding: var(--space-5xl) 0;
    background-color: var(--color-bg);
}

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

.credibility__header {
    max-width: 760px;
    margin-bottom: var(--space-4xl);
}

.credibility__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.credibility__intro {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

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

@media (min-width: 640px) {
    .credibility__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .credibility__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.credibility__item {
    padding: var(--space-xl);
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-base), 
                box-shadow var(--transition-base),
                border-color var(--transition-base);
}

.credibility__item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-text-subtle);
}

.credibility__item-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    transition: background-color var(--transition-base);
}

.credibility__item:hover .credibility__item-icon {
    background-color: var(--color-accent);
}

.credibility__item-icon svg {
    width: 24px;
    height: 24px;
    transition: stroke var(--transition-base);
}

.credibility__item:hover .credibility__item-icon svg {
    stroke: var(--color-bg);
}

.credibility__item-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.credibility__item-text {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

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

.services {
    padding: var(--space-5xl) 0;
    background-color: var(--color-bg-alt);
}

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

.services__header {
    max-width: 640px;
    margin-bottom: var(--space-4xl);
}

.services__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.services__intro {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

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

@media (min-width: 768px) {
    .services__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.services__item {
    padding: var(--space-2xl);
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-base), 
                box-shadow var(--transition-base),
                border-color var(--transition-base);
    position: relative;
    overflow: hidden;
}

.services__item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.services__item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-text-subtle);
}

.services__item:hover::before {
    transform: scaleX(1);
}

.services__item-number {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-subtle);
    margin-bottom: var(--space-xl);
}

.services__item-title {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.services__item-text {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

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

.services__item-list li {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    padding-left: var(--space-lg);
    position: relative;
}

.services__item-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 6px;
    height: 6px;
    background-color: var(--color-accent);
    border-radius: 50%;
}

/* ============================================
   Process Section
   ============================================ */

.process {
    padding: var(--space-5xl) 0;
    background-color: var(--color-bg);
}

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

.process__header {
    max-width: 640px;
    margin-bottom: var(--space-4xl);
}

.process__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.process__intro {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.process__timeline {
    max-width: 800px;
}

.process__step {
    display: flex;
    gap: var(--space-xl);
    position: relative;
}

.process__step:not(:last-child) {
    padding-bottom: var(--space-lg);
}

.process__step-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
}

.process__step-number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    background-color: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-base), 
                border-color var(--transition-base),
                color var(--transition-base);
}

.process__step:hover .process__step-number,
.process__step--active .process__step-number {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg);
}

.process__step-line {
    flex: 1;
    width: 2px;
    background-color: var(--color-border);
    margin-top: var(--space-sm);
}

.process__step:last-child .process__step-line {
    display: none;
}

.process__step-content {
    flex: 1;
    padding-bottom: var(--space-xl);
}

.process__step-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
    cursor: pointer;
    text-align: left;
    color: var(--color-text);
}

.process__step-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: inherit;
    transition: color var(--transition-fast);
}

.process__step:hover .process__step-title {
    color: var(--color-text-muted);
}

.process__step-toggle {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast), transform var(--transition-base);
}

.process__step-toggle svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-base);
}

.process__step-header[aria-expanded="true"] .process__step-toggle {
    background-color: var(--color-accent);
}

.process__step-header[aria-expanded="true"] .process__step-toggle svg {
    stroke: var(--color-bg);
    transform: rotate(45deg);
}

.process__step-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-smooth), opacity var(--transition-base);
    opacity: 0;
}

.process__step-body p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    padding-top: var(--space-sm);
    padding-bottom: var(--space-md);
}

.process__step--active .process__step-body {
    max-height: 200px;
    opacity: 1;
}

/* ============================================
   About Section
   ============================================ */

.about {
    padding: var(--space-5xl) 0;
    background-color: var(--color-bg-alt);
}

.about__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4xl);
    align-items: start;
}

@media (min-width: 1024px) {
    .about__container {
        grid-template-columns: 1.5fr 1fr;
    }
}

.about__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-xl);
}

.about__text {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.about__text p {
    font-size: 1.0625rem;
    color: var(--color-text-muted);
    line-height: 1.75;
}

.about__values {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.about__value {
    padding: var(--space-xl);
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-base), border-color var(--transition-base);
}

.about__value:hover {
    transform: translateX(4px);
    border-color: var(--color-text-subtle);
}

.about__value-label {
    display: block;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.about__value-text {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

/* ============================================
   Work Section
   ============================================ */

.work {
    padding: var(--space-5xl) 0;
    background-color: var(--color-bg);
}

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

.work__header {
    max-width: 640px;
    margin-bottom: var(--space-4xl);
}

.work__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.work__intro {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.work__placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    background-color: var(--color-bg-elevated);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-xl);
    transition: border-color var(--transition-base);
}

.work__placeholder:hover {
    border-color: var(--color-text-subtle);
}

.work__placeholder-inner {
    text-align: center;
    padding: var(--space-3xl);
    max-width: 400px;
}

.work__placeholder-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-xl);
    background-color: var(--color-bg-alt);
    border-radius: var(--radius-lg);
}

.work__placeholder-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-text-subtle);
}

.work__placeholder-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.work__placeholder-text {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

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

.contact {
    padding: var(--space-5xl) 0;
    background-color: var(--color-bg-alt);
}

.contact__container {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.contact__header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.contact__header .section-label {
    padding-left: 0;
}

.contact__header .section-label::before {
    display: none;
}

.contact__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.contact__intro {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.contact__form {
    padding: var(--space-2xl);
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

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

@media (min-width: 640px) {
    .contact__form-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.form-group--full {
    grid-column: 1 / -1;
    margin-bottom: var(--space-md);
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-optional {
    font-weight: 400;
    color: var(--color-text-subtle);
}

.form-input {
    padding: var(--space-md) var(--space-lg);
    font-size: 0.9375rem;
    color: var(--color-text);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form-input::placeholder {
    color: var(--color-text-subtle);
}

.form-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(10, 10, 10, 0.05);
}

[data-theme="dark"] .form-input:focus {
    box-shadow: 0 0 0 3px rgba(250, 250, 250, 0.1);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23666666' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-right: var(--space-3xl);
}

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

.contact__form-note {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--color-text-subtle);
    margin-top: var(--space-lg);
}

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

.footer {
    padding: var(--space-4xl) 0 var(--space-xl);
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
}

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

.footer__main {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-3xl);
    padding-bottom: var(--space-3xl);
    border-bottom: 1px solid var(--color-border);
}

@media (min-width: 768px) {
    .footer__main {
        grid-template-columns: 1fr auto;
    }
}

.footer__logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.footer__tagline {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

.footer__links {
    display: flex;
    gap: var(--space-4xl);
}

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

.footer__heading {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-subtle);
    margin-bottom: var(--space-sm);
}

.footer__link {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-text);
}

.footer__bottom {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding-top: var(--space-xl);
}

@media (min-width: 640px) {
    .footer__bottom {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.footer__copyright {
    font-size: 0.8125rem;
    color: var(--color-text-subtle);
}

.footer__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.footer__badge-dot {
    width: 8px;
    height: 8px;
    background-color: #22c55e;
    border-radius: 50%;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ============================================
   Performance Indicator
   ============================================ */

.perf-indicator {
    position: fixed;
    bottom: var(--space-lg);
    left: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    font-size: 0.75rem;
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    opacity: 0;
    transform: translateY(10px);
    animation: perfIn 0.4s cubic-bezier(0.22, 1, 0.36, 1) 2s forwards;
}

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

.perf-indicator__label {
    color: var(--color-text-subtle);
}

.perf-indicator__value {
    font-weight: 600;
    font-family: var(--font-display);
    color: #22c55e;
}

/* ============================================
   Scroll Animations
   Progressive enhancement: content visible if JS fails
   ============================================ */

.animate-on-scroll {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
                transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    transition-delay: var(--delay, 0s);
}

/* When JS has run, hide until in view */
html.js-ready .animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
}

html.js-ready .animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

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

@media (max-width: 480px) {
    .hero__title {
        white-space: normal;
    }
    .hero__title-line {
        display: block;
    }
}

@media (max-width: 639px) {
    .hero__title {
        font-size: 2.5rem;
    }
    
    .services__item,
    .credibility__item {
        padding: var(--space-xl);
    }
    
    .contact__form {
        padding: var(--space-xl);
    }
}