/* ========================================
   Root Variables & Base Styles
   ======================================== */
:root {
    /* Colors - Sophisticated Three-Color Palette */
    --color-primary: #0D2623;
    --color-primary-dark: #081815;
    --color-secondary: #14b8a6;
    --color-secondary-light: #5eead4;
    --color-accent: #d97706;
    --color-success: #14b8a6;
    --color-danger: #dc2626;
    
    /* Light Theme Colors */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f9fafb;
    --color-bg-tertiary: #f3f4f6;
    --color-bg-quaternary: #e5e7eb;
    --color-surface: rgba(13, 38, 35, 0.05);
    --color-surface-hover: rgba(13, 38, 35, 0.1);
    --color-surface-active: rgba(13, 38, 35, 0.15);
    
    /* Text Colors */
    --color-text-primary: #111827;
    --color-text-secondary: #4b5563;
    --color-text-tertiary: #6b7280;
    --color-text-muted: #9ca3af;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0D2623 0%, #1a4d47 100%);
    --gradient-secondary: linear-gradient(135deg, #14b8a6 0%, #5eead4 100%);
    --gradient-accent: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
    --gradient-success: linear-gradient(135deg, #14b8a6 0%, #5eead4 100%);
    --gradient-dark: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.98) 100%);
    --gradient-mesh: radial-gradient(at 40% 20%, rgba(13, 38, 35, 0.06) 0px, transparent 50%),
                      radial-gradient(at 80% 0%, rgba(20, 184, 166, 0.05) 0px, transparent 50%),
                      radial-gradient(at 0% 50%, rgba(217, 119, 6, 0.03) 0px, transparent 50%);
    
    /* Shadows & Effects */
    --shadow-xs: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.10);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.18);
    --shadow-glow-primary: 0 0 30px rgba(13, 38, 35, 0.25);
    --shadow-glow-secondary: 0 0 30px rgba(20, 184, 166, 0.3);
    --shadow-glow-accent: 0 0 30px rgba(217, 119, 6, 0.3);
    
    /* Spacing System */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-xs: 0.25rem;
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Layout */
    --container-width: 1200px;
    --container-padding: 2rem;
    --header-height: 5rem;
    
    /* Z-index */
    --z-fixed: 100;
    --z-modal: 1000;
    --z-tooltip: 1500;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-primary);
    background: #ffffff;
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Particle Canvas */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    opacity: 0.35;
}

/* Selection */
::selection {
    background: rgba(20, 184, 166, 0.2);
    color: var(--color-text-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-surface);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-surface-hover);
}

/* ========================================
   Container & Layout
   ======================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
    z-index: 1;
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease;
}

.section__subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-mono);
    position: relative;
    padding: 0.5rem 1rem;
    background: rgba(13, 38, 35, 0.06);
    border-radius: var(--radius-full);
    border: 1px solid rgba(13, 38, 35, 0.15);
}

.section__title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section__description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.header.scroll-header {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.98);
    border-bottom-color: rgba(0, 0, 0, 0.12);
}

.nav {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.03em;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition-base);
}

.nav__logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 10px rgba(13, 38, 35, 0.5));
}

.nav__list {
    display: flex;
    gap: var(--spacing-sm);
    list-style: none;
    align-items: center;
}

.nav__link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-base);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.nav__link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-base);
    z-index: -1;
}

.nav__link:hover::before,
.nav__link.active-link::before {
    opacity: 0.1;
}

.nav__link:hover,
.nav__link.active-link {
    color: var(--color-primary);
    background: var(--color-surface);
    transform: translateY(-2px);
}

.nav__link i {
    font-size: 1rem;
}

.nav__toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-primary);
    width: 2.5rem;
    height: 2.5rem;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.nav__toggle:hover {
    background: var(--color-surface);
    transform: scale(1.1);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: calc(var(--header-height) + 2rem);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.06) 0%, rgba(13, 38, 35, 0.04) 50%, transparent 70%);
    transform: translate(-50%, -50%);
    animation: pulse 4s ease-in-out infinite;
    pointer-events: none;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.3; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.5; }
}

.hero__container {
    position: relative;
    z-index: 1;
}

.hero__content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    background: rgba(20, 184, 166, 0.08);
    border: 1px solid rgba(20, 184, 166, 0.25);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease, float 3s ease-in-out infinite;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.12);
    transition: all var(--transition-base);
}

.hero__badge:hover {
    transform: translateY(-5px);
    border-color: rgba(20, 184, 166, 0.4);
    box-shadow: 0 8px 24px rgba(20, 184, 166, 0.2);
}

.badge-icon {
    font-size: 1.125rem;
    color: var(--color-primary);
    animation: rotate-sparkle 4s linear infinite;
}

@keyframes rotate-sparkle {
    0%, 100% { transform: rotate(0deg) scale(1); }
    25% { transform: rotate(90deg) scale(1.1); }
    50% { transform: rotate(180deg) scale(1); }
    75% { transform: rotate(270deg) scale(1.1); }
}

.badge-text {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-primary);
    font-family: var(--font-mono);
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.03em;
    animation: fadeInUp 0.8s ease;
}

.gradient-text {
    background: linear-gradient(135deg, #0D2623 0%, #14b8a6 70%, #5eead4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
    filter: drop-shadow(0 2px 8px rgba(20, 184, 166, 0.2));
}

@keyframes glow {
    0%, 100% { filter: drop-shadow(0 2px 8px rgba(20, 184, 166, 0.2)); }
    50% { filter: drop-shadow(0 4px 12px rgba(13, 38, 35, 0.3)); }
}

.hero__description {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero__stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.stat-item {
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(13, 38, 35, 0.15);
    min-width: 180px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-base);
}

.stat-item:hover {
    transform: translateY(-10px) scale(1.05);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow-primary);
}

.stat-item:hover::before {
    opacity: 0.1;
}

.stat-item > * {
    position: relative;
    z-index: 1;
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.scroll-down {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-tertiary);
    font-size: 0.875rem;
    animation: float 2s ease-in-out infinite;
    cursor: pointer;
    transition: var(--transition-base);
}

.scroll-down:hover {
    color: var(--color-primary);
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-15px); }
}

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

/* ========================================
   Buttons
   ======================================== */
.button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
    position: relative;
    overflow: hidden;
}

.button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.button:hover::before {
    width: 300px;
    height: 300px;
}

.button > * {
    position: relative;
    z-index: 1;
}

.button--primary {
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow: var(--shadow-glow-primary);
}

.button--primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 0 60px rgba(13, 38, 35, 0.5), var(--shadow-xl);
}

.button--secondary {
    background: var(--color-surface);
    color: var(--color-text-primary);
    border: 2px solid rgba(13, 38, 35, 0.2);
    backdrop-filter: blur(10px);
}

.button--secondary:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.button--full {
    width: 100%;
    justify-content: center;
}

/* ========================================
   Services Section
   ======================================== */
.services__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.service-card--half {
    grid-column: span 1;
}

.service-card--full {
    grid-column: span 2;
    max-width: 100%;
}

.service-card {
    background: #ffffff;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(13, 38, 35, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    box-shadow: var(--shadow-sm);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-base);
    z-index: 0;
}

.service-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition-slow);
}

.service-card:hover {
    transform: translateY(-15px) scale(1.02);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-xl), var(--shadow-glow-primary);
}

.service-card:hover::before {
    opacity: 0.08;
}

.service-card:hover::after {
    opacity: 1;
    animation: rotate 10s linear infinite;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.service-card > * {
    position: relative;
    z-index: 1;
}

.service-card__icon {
    width: 4.5rem;
    height: 4.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    font-size: 2rem;
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(13, 38, 35, 0.3);
    transition: var(--transition-base);
}

.service-card:hover .service-card__icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 0 40px rgba(20, 184, 166, 0.5), 0 4px 20px rgba(13, 38, 35, 0.35);
}

.service-card__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    line-height: 1.3;
}

.service-card__description {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    font-size: 0.95rem;
}

.service-card__features {
    list-style: none;
    padding: 0;
}

.service-card__features li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.625rem 0;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    transition: var(--transition-fast);
}

.service-card__features li:hover {
    color: var(--color-text-primary);
    transform: translateX(5px);
}

.service-card__features i {
    color: var(--color-primary);
    margin-top: 0.25rem;
    flex-shrink: 0;
    font-size: 0.875rem;
}

/* ========================================
   Philosophy Section
   ======================================== */
.philosophy__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.philosophy-card {
    background: #ffffff;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(13, 38, 35, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.philosophy-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-secondary);
    opacity: 0;
    transition: var(--transition-base);
}

.philosophy-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(13, 38, 35, 0.3);
}

.philosophy-card:hover::before {
    opacity: 0.05;
}

.philosophy-card > * {
    position: relative;
    z-index: 1;
}

.philosophy-card__icon {
    width: 4.5rem;
    height: 4.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    margin: 0 auto var(--spacing-md);
    font-size: 2rem;
    color: #ffffff;
    box-shadow: 0 4px 16px rgba(13, 38, 35, 0.3);
    transition: var(--transition-base);
}

.philosophy-card:hover .philosophy-card__icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 0 40px rgba(20, 184, 166, 0.5), 0 4px 20px rgba(13, 38, 35, 0.35);
}

.philosophy-card__title {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.philosophy-card__subtitle {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-mono);
}

.philosophy-card__text {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    line-height: 1.5;
}

.philosophy-card__description {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

.philosophy-card--values {
    grid-column: 1 / -1;
}

.values-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    text-align: left;
}

.value-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    background: rgba(13, 38, 35, 0.03);
    border-radius: var(--radius-md);
    border: 1px solid rgba(13, 38, 35, 0.08);
    transition: all var(--transition-base);
}

.value-item:hover {
    background: rgba(13, 38, 35, 0.06);
    border-color: var(--color-primary);
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(13, 38, 35, 0.15);
}

.value-item i {
    color: var(--color-primary);
    font-size: 1.75rem;
    flex-shrink: 0;
}

.value-item strong {
    display: block;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
}

.value-item p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========================================
   Case Studies Section
   ======================================== */
.case-studies__grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.case-study-card {
    background: #ffffff;
    border: 1px solid rgba(13, 38, 35, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    width: 100%;
}

.case-study-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-base);
}

.case-study-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl), var(--shadow-glow-primary);
    border-color: var(--color-primary);
}

.case-study-card:hover::before {
    opacity: 1;
}

.case-study__label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(13, 38, 35, 0.06);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(13, 38, 35, 0.12);
}

.case-study__label i {
    font-size: 1rem;
}

.case-study__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.4;
}

.case-study__content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-lg);
}

.case-study__section {
    margin-bottom: 0;
}

.case-study__section:last-child {
    margin-bottom: 0;
}

.case-study__section-title {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.case-study__section-title i {
    font-size: 1.125rem;
}

.case-study__section p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

.case-study__list {
    list-style: none;
    padding: 0;
}

.case-study__list li {
    position: relative;
    padding-left: 1.5rem;
    padding-bottom: 0.625rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.case-study__list li:hover {
    color: var(--color-text-primary);
    transform: translateX(3px);
}

.case-study__list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-size: 1.125rem;
}

.case-study__results {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.result-item {
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(13, 38, 35, 0.03);
    border-radius: var(--radius-md);
    border: 1px solid rgba(13, 38, 35, 0.1);
    transition: all var(--transition-base);
}

.result-item:hover {
    background: rgba(20, 184, 166, 0.08);
    transform: scale(1.05);
    border-color: var(--color-secondary);
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.2);
}

.result-value {
    font-size: 1.75rem;
    font-weight: 900;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
    font-family: var(--font-mono);
}

.result-label {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    font-weight: 600;
    line-height: 1.4;
}

/* Responsive adjustments for case studies */
@media screen and (max-width: 968px) {
    .case-study__content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .case-study__section {
        margin-bottom: var(--spacing-md);
    }
    
    .case-study__section:last-child {
        margin-bottom: 0;
    }
}

/* ========================================
   About Section
   ======================================== */
.about__card {
    background: #ffffff;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(13, 38, 35, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.about__card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-xl), var(--shadow-glow-primary);
    transform: translateY(-5px);
}

.about__table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.about__table tr {
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    transition: var(--transition-fast);
}

.about__table tr:hover {
    background: rgba(13, 38, 35, 0.04);
}

.about__table tr:last-child {
    border-bottom: none;
}

.about__table th,
.about__table td {
    padding: var(--spacing-md);
    text-align: left;
}

.about__table th {
    color: var(--color-primary);
    font-weight: 600;
    width: 200px;
    vertical-align: top;
    font-size: 0.95rem;
}

.about__table td {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.business-list {
    list-style: none;
    padding: 0;
}

.business-list li {
    padding: 0.625rem 0;
    padding-left: 1.75rem;
    position: relative;
    transition: var(--transition-fast);
}

.business-list li:hover {
    color: var(--color-text-primary);
    transform: translateX(5px);
}

.business-list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-size: 1.25rem;
}

/* ========================================
   Contact Section
   ======================================== */
.contact__container {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

.contact__form {
    background: #ffffff;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(13, 38, 35, 0.15);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.form__group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form__group--full {
    grid-column: 1 / -1;
}

.form__label {
    color: var(--color-text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

.required {
    color: var(--color-accent);
}

.form__input,
.form__textarea {
    padding: 1rem 1.25rem;
    background: var(--color-bg-tertiary);
    border: 2px solid rgba(13, 38, 35, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.1), 0 4px 12px rgba(20, 184, 166, 0.15);
    transform: translateY(-2px);
}

.form__textarea {
    resize: vertical;
    min-height: 150px;
}

.contact__success {
    display: none;
    text-align: center;
    padding: var(--spacing-xl);
    background: #ffffff;
    backdrop-filter: blur(20px);
    border: 2px solid rgba(20, 184, 166, 0.4);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md), 0 0 30px rgba(20, 184, 166, 0.25);
}

.contact__success.show {
    display: block;
    animation: fadeIn 0.6s ease;
}

.contact__success i {
    font-size: 4rem;
    color: var(--color-success);
    margin-bottom: var(--spacing-md);
    animation: bounce 1s ease;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-30px); }
    60% { transform: translateY(-15px); }
}

.contact__success h3 {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 1.75rem;
}

.contact__success p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.9) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.footer__container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__logo {
    font-size: 1.75rem;
    font-weight: 900;
    color: var(--color-primary);
}

.footer__tagline {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.footer__links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

.footer__title {
    color: var(--color-text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
}

.footer__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.footer__list a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    display: inline-block;
}

.footer__list a:hover {
    color: var(--color-primary);
    padding-left: 0.75rem;
    transform: translateX(5px);
}

.footer__bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    text-align: center;
    color: var(--color-text-tertiary);
    font-size: 0.875rem;
}

/* ========================================
   Responsive Design
   ======================================== */
@media screen and (max-width: 968px) {
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        max-width: 400px;
        height: 100vh;
        background: var(--color-bg-primary);
        padding: var(--spacing-xl);
        transition: var(--transition-base);
        border-left: 1px solid rgba(0, 0, 0, 0.1);
        box-shadow: var(--shadow-xl);
        z-index: var(--z-modal);
    }

    .nav__menu.show-menu {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }

    .nav__link {
        width: 100%;
    }

    .nav__toggle {
        display: flex;
    }

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

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

    .service-card--half,
    .service-card--full {
        grid-column: span 1;
    }

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

    .values-list {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 640px) {
    :root {
        --container-padding: 1rem;
        --spacing-3xl: 4rem;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .section__title {
        font-size: 2rem;
    }

    .hero__buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero__buttons .button {
        width: 100%;
    }

    .contact__form {
        grid-template-columns: 1fr;
        padding: var(--spacing-lg);
    }

    .about__table th,
    .about__table td {
        display: block;
        width: 100%;
        padding: var(--spacing-sm);
    }

    .about__table th {
        padding-bottom: 0.5rem;
    }

    .stat-item {
        min-width: 140px;
    }
}

/* ========================================
   Accessibility & Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 4px;
    border-radius: var(--radius-sm);
}