/* ============================================
   VECTOR LINK DIGITAL - PROFESSIONAL STYLESHEET
   Manufacturing System Integration & Automation
   ============================================ */

/* ============================================
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */
:root {
    /* Brand Color Palette */
    --color-primary: #2196f3;        /* Electric Blue */
    --color-primary-dark: #1976d2;   /* Darker Blue for hovers */
    --color-primary-light: #64b5f6;  /* Lighter Blue */
    
    --color-navy: #1a233a;           /* Deep Navy */
    --color-navy-light: #2a3550;     /* Lighter Navy */
    
    --color-gray: #9aa0a6;           /* Steel Gray */
    --color-gray-light: #c5c9cc;     /* Light Gray */
    --color-gray-dark: #6b7280;      /* Dark Gray */
    
    --color-white: #ffffff;
    --color-off-white: #f8f9fa;
    
    /* Semantic Colors */
    --color-text-primary: #1a233a;
    --color-text-secondary: #6b7280;
    --color-text-light: #9aa0a6;
    --color-text-inverse: #ffffff;
    
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-dark: #1a233a;
    
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    
    /* Typography System */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-heading: 'Inter', var(--font-primary);
    
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --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-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Spacing System (8px base) */
    --space-1: 0.5rem;   /* 8px */
    --space-2: 1rem;     /* 16px */
    --space-3: 1.5rem;   /* 24px */
    --space-4: 2rem;     /* 32px */
    --space-5: 2.5rem;   /* 40px */
    --space-6: 3rem;     /* 48px */
    --space-8: 4rem;     /* 64px */
    --space-10: 5rem;    /* 80px */
    --space-12: 6rem;    /* 96px */
    --space-16: 8rem;    /* 128px */
    
    /* Layout */
    --container-max-width: 1200px;
    --container-padding: var(--space-3);
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    /* Z-index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ============================================
   2. RESET & BASE STYLES
   ============================================ */

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

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

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

/* Typography Base Styles */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--space-2);
    color: var(--color-text-secondary);
}

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

a:hover {
    color: var(--color-primary-dark);
}

a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

button, input, textarea, select {
    font: inherit;
}

ul, ol {
    list-style: none;
}

/* ============================================
   3. UTILITY CLASSES
   ============================================ */

/* Container for consistent width and padding */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* Skip Link for Keyboard Navigation (Accessibility) */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--space-2);
    z-index: 100;
    text-decoration: none;
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   4. HEADER & NAVIGATION
   ============================================ */

.header {
    position: sticky;
    top: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 4rem;
    padding: var(--space-2) 0;
}

/* Brand/Logo */
.nav__brand {
    flex-shrink: 0;
}

.nav__logo {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-navy);
}

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

.nav__logo-text {
    display: inline-block;
}

.nav__logo-accent {
    color: var(--color-primary);
}

/* Mobile Menu Toggle (CSS-only) */
.nav__toggle {
    display: none;
}

.nav__toggle-label {
    display: none;
    cursor: pointer;
    padding: var(--space-1);
}

.nav__hamburger {
    display: block;
    position: relative;
    width: 24px;
    height: 2px;
    background-color: var(--color-navy);
    transition: background-color var(--transition-fast);
}

.nav__hamburger::before,
.nav__hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background-color: var(--color-navy);
    transition: transform var(--transition-base);
}

.nav__hamburger::before {
    top: -8px;
}

.nav__hamburger::after {
    top: 8px;
}

/* Navigation Menu */
.nav__menu {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.nav__link {
    display: block;
    padding: var(--space-1) var(--space-2);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
    border-radius: var(--radius-md);
}

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

.nav__link--cta {
    background-color: var(--color-primary);
    color: white;
}

.nav__link--cta:hover {
    background-color: var(--color-primary-dark);
    color: white;
}

/* Mobile Navigation Styles */
@media (max-width: 768px) {
    .nav__toggle-label {
        display: block;
        z-index: var(--z-fixed);
    }
    
    .nav__menu {
        position: fixed;
        top: 0;
        right: 0;
        width: 100%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-white);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--space-8) var(--space-4);
        gap: var(--space-2);
        box-shadow: var(--shadow-xl);
        transform: translateX(100%);
        transition: transform var(--transition-base);
    }
    
    .nav__toggle:checked ~ .nav__menu {
        transform: translateX(0);
    }
    
    .nav__toggle:checked ~ .nav__toggle-label .nav__hamburger {
        background-color: transparent;
    }
    
    .nav__toggle:checked ~ .nav__toggle-label .nav__hamburger::before {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav__toggle:checked ~ .nav__toggle-label .nav__hamburger::after {
        transform: rotate(-45deg) translate(6px, -6px);
    }
    
    .nav__link {
        width: 100%;
        padding: var(--space-2);
    }
}

/* ============================================
   5. BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-weight: var(--font-weight-semibold);
    text-align: center;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    line-height: 1;
    font-size: var(--font-size-base);
}

.btn--primary {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.btn--primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--secondary:hover {
    background-color: var(--color-primary);
    color: white;
}

.btn--large {
    padding: 1.25rem 2.5rem;
    font-size: var(--font-size-lg);
}

.btn--footer {
    background-color: var(--color-primary);
    color: white;
    padding: 0.75rem 1.5rem;
    display: inline-block;
    margin-top: var(--space-2);
}

.btn--footer:hover {
    background-color: var(--color-primary-dark);
    color: white;
}

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

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ============================================
   6. HERO SECTION
   ============================================ */

.hero {
    padding: var(--space-16) 0 var(--space-12);
    background: linear-gradient(135deg, var(--color-off-white) 0%, var(--color-white) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.05) 0%, transparent 100%);
    z-index: 0;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero__content {
    max-width: 650px;
}

.hero__title {
    font-size: var(--font-size-6xl);
    line-height: 1.1;
    margin-bottom: var(--space-4);
    color: var(--color-navy);
    font-weight: var(--font-weight-extrabold);
}

.hero__title-highlight {
    color: var(--color-primary);
    position: relative;
}

.hero__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
    line-height: var(--line-height-relaxed);
}

.hero__actions {
    margin-bottom: var(--space-3);
}

.hero__tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    font-style: italic;
    margin-top: var(--space-2);
}

/* Hero Visual Element */
.hero__visual {
    display: none;
}

.hero__graphic {
    width: 100%;
    height: 450px;
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 50%, var(--color-primary) 100%);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.hero__graphic-overlay {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255, 255, 255, 0.03) 10px,
        rgba(255, 255, 255, 0.03) 20px
    );
}

@media (min-width: 768px) {
    .hero .container {
        grid-template-columns: 1.2fr 1fr;
    }
    
    .hero__visual {
        display: block;
    }
}

@media (max-width: 768px) {
    .hero {
        padding: var(--space-10) 0 var(--space-8);
    }
    
    .hero__title {
        font-size: var(--font-size-4xl);
    }
}

/* ============================================
   7. SECTION HEADERS
   ============================================ */

.section-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.section-header--left {
    text-align: left;
}

.section-header__title {
    font-size: var(--font-size-4xl);
    color: var(--color-navy);
    margin-bottom: var(--space-3);
    font-weight: var(--font-weight-bold);
}

.section-header__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
}

.section-header--left .section-header__description {
    margin: 0;
}

/* Override for dark backgrounds (Contact section) */
.contact .section-header__title,
.contact .section-header__description {
    color: var(--color-white);
}

/* ============================================
   8. CHALLENGE SECTION
   ============================================ */

.challenge {
    padding: var(--space-16) 0;
    background-color: var(--color-bg-secondary);
}

.challenge__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.challenge__text {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
}

.challenge__solution {
    margin-top: var(--space-8);
    padding: var(--space-6);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.challenge__solution-text {
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
}

.challenge__solution-text strong {
    color: var(--color-navy);
}

/* ============================================
   9. SERVICES SECTION
   ============================================ */

.services {
    padding: var(--space-16) 0;
    background-color: var(--color-white);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

/* Service Card Component */
.service-card {
    padding: var(--space-6);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border-light);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

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

.service-card__icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.service-card__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-navy);
    margin-bottom: var(--space-2);
}

.service-card__subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    font-weight: var(--font-weight-medium);
}

.service-card__list {
    list-style: none;
    padding: 0;
    text-align: left;
    width: 100%;
}

.service-card__list li {
    position: relative;
    padding-left: var(--space-4);
    margin-bottom: var(--space-3);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.service-card__list li::before {
    content: '•';
    position: absolute;
    left: var(--space-2);
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
}

.services__cta {
    text-align: center;
    margin-top: var(--space-8);
}

/* Responsive Grid for Services */
@media (max-width: 1024px) {
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .services__grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   10. ABOUT SECTION
   ============================================ */

.about {
    padding: var(--space-16) 0;
    background-color: var(--color-bg-secondary);
}

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

.about__story {
    margin-bottom: var(--space-10);
}

.about__paragraph {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    line-height: var(--line-height-relaxed);
}

.about__paragraph:last-child {
    margin-bottom: 0;
}

.about__paragraph strong {
    color: var(--color-navy);
    font-weight: var(--font-weight-semibold);
}

/* Value Cards */
.about__values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-10);
}

.value-card {
    padding: var(--space-6);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.value-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.value-card__icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-3);
}

.value-card__title {
    font-size: var(--font-size-xl);
    color: var(--color-navy);
    margin-bottom: var(--space-2);
    font-weight: var(--font-weight-semibold);
}

.value-card__description {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-base);
}

/* Responsive for Value Cards */
@media (max-width: 768px) {
    .about__values {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   11. RESULTS SECTION
   ============================================ */

.results {
    padding: var(--space-16) 0;
    background-color: var(--color-white);
}

.results__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

/* Result Card Component */
.result-card {
    padding: var(--space-6);
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
}

.result-card:hover {
    transform: translateY(-4px);
}

.result-card__metric {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

.result-card__title {
    font-size: var(--font-size-xl);
    color: var(--color-white);
    margin-bottom: var(--space-2);
    font-weight: var(--font-weight-semibold);
}

.result-card__description {
    color: var(--color-gray-light);
    line-height: var(--line-height-relaxed);
}

.results__footer {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: var(--space-8) auto 0;
    line-height: var(--line-height-relaxed);
}

/* Responsive for Results */
@media (max-width: 1024px) {
    .results__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .results__grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   12. CONTACT SECTION
   ============================================ */

.contact {
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
}

.contact .section-header__title,
.contact .section-header__description {
    color: var(--color-white);
}

.contact__cta {
    text-align: center;
    margin: var(--space-8) 0;
}

.contact__info {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    flex-wrap: wrap;
    margin-top: var(--space-6);
}

.contact__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-white);
}

.contact__icon {
    flex-shrink: 0;
    color: var(--color-primary);
}

.contact__link {
    color: var(--color-white);
    font-weight: var(--font-weight-medium);
}

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

/* ============================================
   13. FOOTER
   ============================================ */

.footer {
    background-color: var(--color-navy);
    color: var(--color-gray-light);
    padding: var(--space-12) 0 var(--space-4);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer__column {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.footer__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: white;
    margin-bottom: var(--space-2);
}

.footer__title-accent {
    color: var(--color-primary);
}

.footer__description {
    color: var(--color-gray-light);
    line-height: var(--line-height-relaxed);
}

.footer__heading {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: white;
    margin-bottom: var(--space-3);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.footer__link {
    color: var(--color-gray-light);
    transition: color var(--transition-fast);
    font-size: var(--font-size-base);
}

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

.footer__text {
    color: var(--color-gray-light);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-2);
    line-height: var(--line-height-normal);
}

/* Footer Bottom */
.footer__bottom {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__copyright {
    color: var(--color-gray-light);
    font-size: var(--font-size-sm);
}

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

/* Responsive Footer */
@media (max-width: 1024px) {
    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .footer__grid {
        grid-template-columns: 1fr;
    }
    
    .footer__bottom {
        flex-direction: column;
        gap: var(--space-3);
        text-align: center;
    }
}

/* ============================================
   14. RESPONSIVE TYPOGRAPHY
   ============================================ */

@media (max-width: 768px) {
    :root {
        --font-size-6xl: 2.5rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
    }
    
    .section-header__title {
        font-size: var(--font-size-3xl);
    }
}

/* ============================================
   15. ACCESSIBILITY ENHANCEMENTS
   ============================================ */

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

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

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-text-primary: #000000;
        --color-text-secondary: #1a1a1a;
        --color-border: #000000;
    }
}

/* ============================================
   16. PRINT STYLES
   ============================================ */

@media print {
    .header,
    .nav,
    .footer,
    .btn {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
    }
    
    a {
        text-decoration: underline;
        color: #000;
    }
    
    a[href^="http"]:after {
        content: " (" attr(href) ")";
    }
}
/* ============================================
   17. CONTACT MODAL
   ============================================ */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

.modal.is-active {
    display: flex;
}

.modal__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(26, 35, 58, 0.85);
    backdrop-filter: blur(4px);
    cursor: pointer;
}

.modal__container {
    position: relative;
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease-out;
}

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

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.modal__title {
    font-size: var(--font-size-3xl);
    color: var(--color-navy);
    margin: 0;
}

.modal__close {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-1);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modal__body {
    padding: var(--space-6);
}

.modal__description {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
    line-height: var(--line-height-relaxed);
}

/* Modal Form Styles */
.modal-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.form-label {
    font-weight: var(--font-weight-medium);
    color: var(--color-navy);
    font-size: var(--font-size-sm);
}

.form-required {
    color: #ef4444;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-white);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.form-input.is-invalid {
    border-color: #ef4444;
}

.form-input.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

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

.form-error {
    color: #ef4444;
    font-size: var(--font-size-sm);
    min-height: 1.25rem;
    display: block;
}

.modal__actions {
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
    margin-top: var(--space-4);
}

/* Loading Spinner */
.btn__loader {
    display: inline-flex;
    align-items: center;
}

.spinner {
    animation: rotate 2s linear infinite;
    width: 20px;
    height: 20px;
}

.spinner-path {
    stroke: currentColor;
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

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

@keyframes dash {
    0% {
        stroke-dasharray: 1, 150;
        stroke-dashoffset: 0;
    }
    50% {
        stroke-dasharray: 90, 150;
        stroke-dashoffset: -35;
    }
    100% {
        stroke-dasharray: 90, 150;
        stroke-dashoffset: -124;
    }
}

/* Success and Error States */
.modal__success,
.modal__error {
    text-align: center;
    padding: var(--space-6) 0;
}

.success-icon,
.error-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
}

.success-icon svg {
    color: #10b981;
}

.error-icon svg {
    color: #ef4444;
}

.success-title,
.error-title {
    font-size: var(--font-size-2xl);
    color: var(--color-navy);
    margin-bottom: var(--space-3);
}

.success-message,
.error-message {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-6);
}

/* Responsive Modal */
@media (max-width: 768px) {
    .modal__container {
        max-width: 100%;
        max-height: 100vh;
        border-radius: 0;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .modal__actions {
        flex-direction: column;
    }
    
    .modal__actions .btn {
        width: 100%;
    }
}

/* Prevent body scroll when modal is open */
body.modal-open {
    overflow: hidden;
}
/* ============================================
   END OF STYLESHEET
   ============================================ */