/* ============================================
   GEO.TI.LA S.R.L. - DESIGN SYSTEM v2.0
   Professional Design Tokens & Variables
   ============================================ */

:root {
    /* ===========================================
       COLOR PALETTE
       =========================================== */

    /* Primary Colors - Green (Brand) */
    --color-primary-50: #f0f9f0;
    --color-primary-100: #dcf0dc;
    --color-primary-200: #b8e0b8;
    --color-primary-300: #8ccc8c;
    --color-primary-400: #5fb55f;
    --color-primary-500: #2d5a27;
    --color-primary-600: #264d21;
    --color-primary-700: #1e3d1a;
    --color-primary-800: #172e14;
    --color-primary-900: #0f1f0d;

    /* Primary Aliases */
    --color-primary: #2d5a27;
    --color-primary-dark: #1e3d1a;
    --color-primary-light: #4a8f42;

    /* Secondary Colors - Blue */
    --color-secondary-50: #f0f7fc;
    --color-secondary-100: #dcebf7;
    --color-secondary-200: #b3d4ef;
    --color-secondary-300: #7fb8e4;
    --color-secondary-400: #4d9cd9;
    --color-secondary-500: #3a7ca5;
    --color-secondary-600: #2d6384;
    --color-secondary-700: #224a63;
    --color-secondary-800: #183242;
    --color-secondary-900: #0d1a21;

    --color-secondary: #3a7ca5;

    /* Accent Colors - Gold/Orange */
    --color-accent-50: #fef9ed;
    --color-accent-100: #fdf0d0;
    --color-accent-200: #fbe0a1;
    --color-accent-300: #f8cc6e;
    --color-accent-400: #f5b83b;
    --color-accent-500: #f5a623;
    --color-accent-600: #d18b1a;
    --color-accent-700: #a06a14;
    --color-accent-800: #6f4a0e;
    --color-accent-900: #3e2907;

    --color-accent: #f5a623;

    /* Semantic Colors */
    --color-success: #22c55e;
    --color-success-light: #dcfce7;
    --color-success-dark: #15803d;

    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-warning-dark: #b45309;

    --color-error: #ef4444;
    --color-error-light: #fee2e2;
    --color-error-dark: #b91c1c;

    --color-info: #3b82f6;
    --color-info-light: #dbeafe;
    --color-info-dark: #1d4ed8;

    /* Neutral Colors */
    --color-neutral-0: #ffffff;
    --color-neutral-50: #f8fafc;
    --color-neutral-100: #f1f5f9;
    --color-neutral-200: #e2e8f0;
    --color-neutral-300: #cbd5e1;
    --color-neutral-400: #94a3b8;
    --color-neutral-500: #64748b;
    --color-neutral-600: #475569;
    --color-neutral-700: #334155;
    --color-neutral-800: #1e293b;
    --color-neutral-900: #0f172a;
    --color-neutral-950: #020617;

    /* Text Colors */
    --color-text: #1a1a1a;
    --color-text-light: #4a4a4a;
    --color-text-muted: #6b6b6b;
    --color-text-inverse: #ffffff;

    /* Background Colors */
    --color-bg: #ffffff;
    --color-bg-alt: #f5f7fa;
    --color-bg-card: #ffffff;
    --color-bg-elevated: #ffffff;
    --color-bg-dark: #0f172a;

    /* Border Colors */
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-border-dark: #cbd5e1;
    --color-border-focus: var(--color-primary);

    /* Header/Navigation */
    --header-bg: rgba(255, 255, 255, 0.85);
    --header-border: rgba(226, 232, 240, 0.8);

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

    /* Font Families */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;

    /* Font Sizes - Using a modular scale (1.25) */
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-md: 1.0625rem;    /* 17px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */

    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Line Heights */
    --line-height-none: 1;
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;

    /* Letter Spacing */
    --letter-spacing-tighter: -0.05em;
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;
    --letter-spacing-widest: 0.1em;

    /* ===========================================
       SPACING SCALE (4px base unit)
       =========================================== */

    --space-0: 0;
    --space-px: 1px;
    --space-0-5: 0.125rem;  /* 2px */
    --space-1: 0.25rem;     /* 4px */
    --space-1-5: 0.375rem;  /* 6px */
    --space-2: 0.5rem;      /* 8px */
    --space-2-5: 0.625rem;  /* 10px */
    --space-3: 0.75rem;     /* 12px */
    --space-3-5: 0.875rem;  /* 14px */
    --space-4: 1rem;        /* 16px */
    --space-5: 1.25rem;     /* 20px */
    --space-6: 1.5rem;      /* 24px */
    --space-7: 1.75rem;     /* 28px */
    --space-8: 2rem;        /* 32px */
    --space-9: 2.25rem;     /* 36px */
    --space-10: 2.5rem;     /* 40px */
    --space-11: 2.75rem;    /* 44px */
    --space-12: 3rem;       /* 48px */
    --space-14: 3.5rem;     /* 56px */
    --space-16: 4rem;       /* 64px */
    --space-20: 5rem;       /* 80px */
    --space-24: 6rem;       /* 96px */
    --space-28: 7rem;       /* 112px */
    --space-32: 8rem;       /* 128px */

    /* ===========================================
       SHADOWS & ELEVATION
       =========================================== */

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
    --shadow-none: 0 0 #0000;

    /* Colored shadows for buttons */
    --shadow-primary: 0 4px 14px rgba(45, 90, 39, 0.25);
    --shadow-primary-lg: 0 8px 24px rgba(45, 90, 39, 0.35);
    --shadow-secondary: 0 4px 14px rgba(58, 124, 165, 0.25);

    /* ===========================================
       BORDER RADIUS
       =========================================== */

    --radius-none: 0;
    --radius-sm: 0.25rem;     /* 4px */
    --radius-default: 0.375rem; /* 6px */
    --radius-md: 0.5rem;      /* 8px */
    --radius-lg: 0.75rem;     /* 12px */
    --radius-xl: 1rem;        /* 16px */
    --radius-2xl: 1.5rem;     /* 24px */
    --radius-3xl: 2rem;       /* 32px */
    --radius-full: 9999px;

    /* ===========================================
       TRANSITIONS & ANIMATIONS
       =========================================== */

    /* Durations */
    --duration-75: 75ms;
    --duration-100: 100ms;
    --duration-150: 150ms;
    --duration-200: 200ms;
    --duration-300: 300ms;
    --duration-500: 500ms;
    --duration-700: 700ms;
    --duration-1000: 1000ms;

    /* Timing Functions */
    --ease-linear: linear;
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Composite transitions */
    --transition-none: none;
    --transition-all: all var(--duration-200) var(--ease-in-out);
    --transition-default: background-color var(--duration-200) var(--ease-in-out),
                         border-color var(--duration-200) var(--ease-in-out),
                         color var(--duration-200) var(--ease-in-out),
                         box-shadow var(--duration-200) var(--ease-in-out),
                         transform var(--duration-200) var(--ease-in-out);
    --transition-colors: background-color var(--duration-200) var(--ease-in-out),
                        border-color var(--duration-200) var(--ease-in-out),
                        color var(--duration-200) var(--ease-in-out);
    --transition-opacity: opacity var(--duration-200) var(--ease-in-out);
    --transition-shadow: box-shadow var(--duration-200) var(--ease-in-out);
    --transition-transform: transform var(--duration-200) var(--ease-in-out);

    /* Legacy aliases */
    --transition: 0.2s ease;
    --transition-slow: 0.3s ease;

    /* ===========================================
       Z-INDEX SCALE
       =========================================== */

    --z-behind: -1;
    --z-default: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-header: 400;
    --z-overlay: 500;
    --z-modal-backdrop: 900;
    --z-modal: 1000;
    --z-popover: 1100;
    --z-tooltip: 1200;
    --z-toast: 1300;
    --z-max: 9999;

    /* ===========================================
       LAYOUT & CONTAINERS
       =========================================== */

    --container-xs: 20rem;    /* 320px */
    --container-sm: 24rem;    /* 384px */
    --container-md: 28rem;    /* 448px */
    --container-lg: 32rem;    /* 512px */
    --container-xl: 36rem;    /* 576px */
    --container-2xl: 42rem;   /* 672px */
    --container-3xl: 48rem;   /* 768px */
    --container-4xl: 56rem;   /* 896px */
    --container-5xl: 64rem;   /* 1024px */
    --container-6xl: 72rem;   /* 1152px */
    --container-7xl: 80rem;   /* 1280px */
    --container-full: 100%;

    --max-width-content: 1280px;
    --max-width-text: 65ch;

    /* ===========================================
       BREAKPOINTS (for reference in media queries)
       =========================================== */

    /*
    --breakpoint-xs: 480px;
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;
    */

    /* ===========================================
       FOCUS RING (Accessibility)
       =========================================== */

    --focus-ring-color: rgba(45, 90, 39, 0.5);
    --focus-ring-offset: 2px;
    --focus-ring-width: 3px;
    --focus-ring: 0 0 0 var(--focus-ring-offset) var(--color-bg),
                  0 0 0 calc(var(--focus-ring-offset) + var(--focus-ring-width)) var(--focus-ring-color);
}

/* ===========================================
   DARK THEME OVERRIDES
   =========================================== */

[data-theme="dark"] {
    /* Text Colors - Improved contrast for accessibility */
    --color-text: #f1f5f9;
    --color-text-light: #cbd5e1;
    --color-text-muted: #94a3b8;
    --color-text-inverse: #0f172a;

    /* Background Colors */
    --color-bg: #0f172a;
    --color-bg-alt: #1e293b;
    --color-bg-card: #1e293b;
    --color-bg-elevated: #334155;
    --color-bg-dark: #020617;

    /* Border Colors */
    --color-border: #334155;
    --color-border-light: #1e293b;
    --color-border-dark: #475569;

    /* Primary Colors - Lighter for dark mode visibility */
    --color-primary: #4a8f42;
    --color-primary-light: #6bb562;
    --color-primary-dark: #2d5a27;

    /* Header/Navigation */
    --header-bg: rgba(15, 23, 42, 0.9);
    --header-border: rgba(51, 65, 85, 0.8);

    /* Shadows - Deeper for dark backgrounds */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.15);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2), 0 1px 2px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.35), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.35);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);

    /* Colored shadows */
    --shadow-primary: 0 4px 14px rgba(74, 143, 66, 0.3);
    --shadow-primary-lg: 0 8px 24px rgba(74, 143, 66, 0.4);

    /* Focus Ring */
    --focus-ring-color: rgba(74, 143, 66, 0.6);
    --focus-ring: 0 0 0 var(--focus-ring-offset) var(--color-bg),
                  0 0 0 calc(var(--focus-ring-offset) + var(--focus-ring-width)) var(--focus-ring-color);
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 0.5;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}

/* ===========================================
   BASE RESET & GLOBAL STYLES
   =========================================== */

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

html {
    scroll-behavior: smooth;
    /* Prevent layout shift when scrollbar appears */
    scrollbar-gutter: stable;
}

body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

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

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

/* Improved focus styles for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: var(--color-text-inverse);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    z-index: var(--z-max);
    transition: top var(--duration-200) var(--ease-out);
}

.skip-link:focus {
    top: var(--space-4);
}

ul {
    list-style: none;
}

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

/* Prevent text selection on interactive elements */
button,
.btn,
.nav-link,
.tool-link,
.service-link {
    user-select: none;
    -webkit-user-select: none;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--header-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--header-border);
    transition: transform var(--transition-slow), background-color var(--transition-slow), box-shadow var(--transition-slow);
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.header.hidden {
    transform: translateY(-100%);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 10;
}

.logo-img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.logo-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-light);
    padding: 8px 14px;
    border-radius: var(--radius-md);
    transition: all var(--transition);
    background: none;
    border: none;
}

.nav-link:hover {
    color: var(--color-text);
    background: var(--color-bg-alt);
}

.nav-link.active {
    color: var(--color-primary);
    background: rgba(45, 90, 39, 0.08);
}

[data-theme="dark"] .nav-link.active {
    background: rgba(74, 143, 66, 0.15);
}

.nav-btn {
    cursor: pointer;
}

.lang-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: 0.02em;
}

.lang-toggle:hover {
    background: var(--color-border);
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition);
}

.theme-toggle:hover {
    background: var(--color-border);
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
    stroke: var(--color-text);
    transition: opacity var(--transition);
}

.theme-toggle .icon-sun {
    display: block;
}

.theme-toggle .icon-moon {
    display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: block;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    margin-left: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.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;
    transition: opacity var(--transition-slow);
}

.hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-bg-light {
    opacity: 1;
}

.hero-bg-dark {
    opacity: 0;
}

[data-theme="dark"] .hero-bg-light {
    opacity: 0;
}

[data-theme="dark"] .hero-bg-dark {
    opacity: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 120px 24px 80px;
    max-width: 800px;
}

.hero-logo-picture {
    display: block;
    margin: 0 auto 32px;
}

.hero-logo {
    width: 560px;
    max-width: 90%;
    margin: 0 auto;
    display: block;
    filter: drop-shadow(0 4px 20px rgba(0,0,0,0.2));
}

.hero-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    text-shadow: 0 2px 12px rgba(0,0,0,0.4);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255,255,255,0.95);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 1px 8px rgba(0,0,0,0.3);
}

.hero-cta {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(45, 90, 39, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(45, 90, 39, 0.4);
}

.btn-outline {
    background: rgba(255,255,255,0.15);
    color: #fff;
    border: 1.5px solid rgba(255,255,255,0.5);
    backdrop-filter: blur(4px);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.8);
}

.section {
    padding: 100px 0;
    background: var(--color-bg);
    transition: background-color var(--transition-slow);
}

.section-alt {
    background: var(--color-bg-alt);
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--color-text);
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-intro {
    font-size: 1.0625rem;
    color: var(--color-text-light);
    text-align: center;
    max-width: 700px;
    margin: 0 auto 48px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}

.service-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    opacity: 0;
    transition: opacity var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-light);
}

.service-card:hover::before {
    opacity: 1;
}

.service-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
    border-radius: var(--radius-md);
    margin-bottom: 18px;
}

.service-icon svg {
    width: 26px;
    height: 26px;
    stroke: #fff;
}

.service-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--color-text);
}

.service-desc {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.65;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    background: none;
    border: none;
    padding: 8px 0;
    cursor: pointer;
    transition: all var(--transition);
}

.service-link::after {
    content: '→';
    transition: transform var(--transition);
}

.service-link:hover {
    color: var(--color-primary-dark);
}

.service-link:hover::after {
    transform: translateX(4px);
}

.lab-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
}

.lab-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    padding: 20px;
    border-left: 3px solid var(--color-primary);
    border-top: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition);
}

.lab-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.lab-title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

.lab-desc {
    font-size: 0.8125rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.robotics-content {
    max-width: 900px;
    margin: 0 auto;
}

.robotics-features {
    display: grid;
    gap: 16px;
}

.feature {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    padding: 22px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.feature:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary-light);
}

.feature-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    border-radius: var(--radius-md);
}

.feature-icon svg {
    width: 22px;
    height: 22px;
    stroke: #fff;
}

.feature-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--color-text);
}

.feature-content p {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.tools-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.tools-more {
    text-align: center;
    margin-top: 40px;
}

.tools-more .btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    padding: 14px 32px;
    font-size: 1rem;
}

.tools-more .btn-outline:hover {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #fff;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(45, 90, 39, 0.3);
}

.tool-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-light);
}

.tool-card-featured {
    border-top: 3px solid var(--color-primary);
}

.tool-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.tool-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-text);
}

.tool-badge {
    font-size: 0.6875rem;
    font-weight: 600;
    padding: 4px 10px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.tool-desc {
    font-size: 0.875rem;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 18px;
    flex: 1;
}

.tool-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    padding: 12px 20px;
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    transition: all var(--transition);
    margin-top: auto;
}

.tool-link::after {
    content: '→';
    transition: transform var(--transition);
}

.tool-link:hover {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #fff;
    border-color: transparent;
    transform: translateY(-1px);
}

.tool-link:hover::after {
    transform: translateX(4px);
}

/* Tools Modal Styles */
.tools-category {
    margin-bottom: 28px;
}

.tools-category:last-child {
    margin-bottom: 0;
}

.tools-category-title {
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
}

.tools-category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.tool-mini-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition);
    text-decoration: none;
}

.tool-mini-card:hover {
    background: var(--color-bg-card);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.tool-mini-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
}

.tool-mini-icon svg {
    width: 20px;
    height: 20px;
    stroke: #fff;
}

.tool-mini-info h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 2px;
}

.tool-mini-info p {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.publications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.publication-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
}

.publication-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    opacity: 0;
    transition: opacity var(--transition);
}

.publication-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary-light);
}

.publication-card:hover::after {
    opacity: 1;
}

.publication-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background: var(--color-bg-alt);
    transition: transform var(--transition-slow);
}

.publication-card:hover .publication-img {
    transform: scale(1.03);
}

.publication-img-wrapper {
    overflow: hidden;
}

.publication-placeholder {
    width: 100%;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-bg-alt) 0%, var(--color-border-light) 100%);
}

.publication-placeholder svg {
    width: 56px;
    height: 56px;
    stroke: var(--color-text-muted);
    opacity: 0.6;
}

.publication-content {
    padding: 20px;
}

.publication-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.publication-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: all var(--transition);
}

.publication-link::after {
    content: '↓';
    transition: transform var(--transition);
}

.publication-link:hover {
    color: var(--color-primary-dark);
}

.publication-link:hover::after {
    transform: translateY(2px);
}

.publication-links {
    display: flex;
    gap: 16px;
}

.section-contact {
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1a2744 100%);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.section-contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary-light), transparent);
}

.section-contact .section-title {
    color: #fff;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: start;
}

.contact-info {
    display: grid;
    gap: 28px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all var(--transition);
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(74, 143, 66, 0.3);
    transform: translateX(4px);
}

.contact-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 12px rgba(45, 90, 39, 0.3);
}

.contact-icon svg {
    width: 22px;
    height: 22px;
    stroke: #fff;
}

.contact-text h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: #fff;
}

.contact-text p {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.75);
    line-height: 1.6;
}

.contact-text a {
    color: var(--color-primary-light);
}

.contact-text a:hover {
    text-decoration: underline;
}

.contact-map {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.contact-map iframe {
    width: 100%;
    height: 280px;
    border: none;
}

.footer {
    background: linear-gradient(180deg, #0a0f1a 0%, #060912 100%);
    color: rgba(255,255,255,0.8);
    padding: 72px 0 28px;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(74, 143, 66, 0.4), transparent);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand {
    max-width: 320px;
}

.footer-logo {
    height: 56px;
    width: auto;
    margin-bottom: 16px;
    filter: brightness(1.1);
}

.footer-tagline {
    font-size: 0.9375rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
}

.footer-links h5 {
    font-size: 0.8125rem;
    font-weight: 700;
    margin-bottom: 18px;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h5::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 32px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 1px;
}

.footer-links ul {
    display: grid;
    gap: 10px;
}

.footer-links a,
.footer-links button {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.55);
    transition: all var(--transition);
    background: none;
    border: none;
    padding: 0;
    text-align: left;
    position: relative;
}

.footer-links a:hover,
.footer-links button:hover {
    color: var(--color-primary-light);
    padding-left: 8px;
}

.footer-bottom {
    padding-top: 28px;
    border-top: 1px solid rgba(255,255,255,0.06);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: rgba(255,255,255,0.4);
    letter-spacing: 0.01em;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(8px);
}

.modal-container {
    position: relative;
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    display: flex;
    flex-direction: column;
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition-slow);
    border: 1px solid var(--color-border);
}

.modal.active .modal-container {
    transform: scale(1) translateY(0);
}

.modal-container.modal-lg {
    max-width: 1100px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 28px;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    background: var(--color-bg-alt);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.modal-header h2 {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.modal-close {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition);
}

.modal-close:hover {
    background: var(--color-border);
    border-color: var(--color-primary);
    transform: rotate(90deg);
}

.modal-close svg {
    width: 18px;
    height: 18px;
    stroke: var(--color-text);
}

.modal-body {
    padding: 28px;
    overflow-y: auto;
    flex: 1;
}

.modal-intro {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: 28px;
    text-align: center;
    line-height: 1.7;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

@media (max-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg);
        flex-direction: column;
        justify-content: flex-start;
        padding: 32px 24px;
        gap: 8px;
        transform: translateX(100%);
        transition: transform var(--transition-slow);
        border-top: 1px solid var(--color-border);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-link {
        font-size: 1rem;
        padding: 14px 16px;
        width: 100%;
        text-align: left;
    }

    .section {
        padding: 60px 0;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-brand {
        max-width: 100%;
    }

    .hero-content {
        padding: 100px 24px 60px;
    }

    .hero-logo {
        width: 320px;
    }

    .modal-container {
        width: 95%;
        max-height: 90vh;
        border-radius: var(--radius-lg);
    }

    .modal-body {
        padding: 20px;
    }
}

@media (max-width: 1024px) {
    .tools-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

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

    .tools-grid,
    .tools-grid-3 {
        grid-template-columns: 1fr;
    }

    .tools-category-grid {
        grid-template-columns: 1fr;
    }

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

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

    html {
        scroll-behavior: auto;
    }
}