/* ==========================================================================
   IBICORE PROFESSIONAL WEBSITE STYLES
   ==========================================================================
   1. CSS Variables & Design Tokens
   2. Reset & Base Styles
   3. Typography
   4. Layout & Containers
   5. Navigation
   6. Hero Section
   7. Trust Bar
   8. Services Section
   9. Individuals Section
   10. Contact Section
   11. Footer
   12. Components (Buttons, Cards, Forms)
   13. Animations
   14. Accessibility
   15. Media Queries
   ========================================================================== */

/* ==========================================================================
   1. CSS VARIABLES & DESIGN TOKENS
   ========================================================================== */
:root {
    /* Primary Colors */
    --color-primary: #D7571E;
    --color-primary-light: #E8733F;
    --color-primary-dark: #B84915;
    --color-primary-50: #FEF3EE;
    --color-primary-100: #FDDECE;

    /* Secondary Colors */
    --color-secondary: #2c3e50;
    --color-secondary-light: #34495e;
    --color-secondary-dark: #1a252f;

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

    /* Semantic Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;

    /* Surface Colors */
    --surface-primary: #ffffff;
    --surface-secondary: var(--color-gray-50);
    --surface-elevated: #ffffff;

    /* Typography */
    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Font Sizes - Fluid Scale */
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
    --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
    --text-3xl: clamp(1.875rem, 1.4rem + 2.25vw, 2.5rem);
    --text-4xl: clamp(2.25rem, 1.5rem + 3.75vw, 3.5rem);

    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    /* Section Spacing */
    --section-padding: clamp(4rem, 8vw, 6rem);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
}

/* ==========================================================================
   2. RESET & BASE STYLES
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--color-gray-700);
    background: var(--surface-primary);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

/* ==========================================================================
   3. TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-secondary);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }

p {
    margin-bottom: var(--space-4);
}

/* ==========================================================================
   4. LAYOUT & CONTAINERS
   ========================================================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ==========================================================================
   5. NAVIGATION
   ========================================================================== */
.navbar {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-slow);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    height: 55px;
    width: auto;
    transition: transform var(--transition-base);
}

.logo:hover {
    transform: scale(1.02);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-8);
}

.nav-link {
    color: var(--color-gray-700);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--text-sm);
    transition: color var(--transition-base);
    position: relative;
    padding: var(--space-2) 0;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    transition: width var(--transition-slow);
    border-radius: var(--radius-full);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: background var(--transition-base);
    background: transparent;
    border: none;
}

.hamburger:hover {
    background: var(--color-gray-100);
}

.hamburger:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

.bar {
    width: 24px;
    height: 2px;
    background-color: var(--color-gray-700);
    margin: 3px 0;
    transition: all var(--transition-slow);
    border-radius: var(--radius-full);
}

/* ==========================================================================
   6. HERO SECTION
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -2;
}

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

.hero-overlay {
    position: absolute;
    inset: 0;
    z-index: -1;
    background: linear-gradient(
        135deg,
        rgba(44, 62, 80, 0.85) 0%,
        rgba(44, 62, 80, 0.7) 50%,
        rgba(215, 87, 30, 0.3) 100%
    );
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 2;
    position: relative;
    max-width: 800px;
    padding: var(--space-8);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: var(--space-6);
    animation: fadeInUp 0.8s ease both;
}

.hero-badge i {
    color: var(--color-primary-light);
}

.hero-title {
    font-size: var(--text-4xl);
    font-weight: 700;
    margin-bottom: var(--space-6);
    color: white;
    line-height: 1.1;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-title-accent {
    display: block;
    color: var(--color-primary-light);
    margin-bottom: var(--space-2);
}

.hero-description {
    font-size: var(--text-lg);
    margin-bottom: var(--space-8);
    color: rgba(255, 255, 255, 0.9);
    animation: fadeInUp 0.8s ease 0.2s both;
    line-height: 1.7;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    justify-content: center;
    margin-bottom: var(--space-8);
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-trust {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-6);
    justify-content: center;
    font-size: var(--text-sm);
    opacity: 0.9;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-trust-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.hero-trust-item i {
    color: var(--color-primary-light);
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: var(--font-body);
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    border-radius: var(--radius-lg);
}

.btn-md {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    box-shadow: 0 4px 15px rgba(215, 87, 30, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(215, 87, 30, 0.4);
}

.btn-outline-light {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.4);
    padding: calc(var(--space-4) - 2px) calc(var(--space-8) - 2px);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.7);
}

/* Legacy CTA button support */
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    padding: var(--space-4) var(--space-8);
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--text-lg);
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(215, 87, 30, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(215, 87, 30, 0.4);
}

/* ==========================================================================
   7. TRUST BAR
   ========================================================================== */
.trust-bar {
    background: var(--surface-primary);
    padding: var(--space-12) 0;
    border-bottom: 1px solid var(--color-gray-100);
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-8);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    justify-content: center;
}

.trust-icon {
    width: 48px;
    height: 48px;
    background: var(--color-primary-50);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.trust-icon i {
    font-size: 1.25rem;
    color: var(--color-primary);
}

.trust-content {
    display: flex;
    flex-direction: column;
}

.trust-number {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1;
}

.trust-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-secondary);
}

.trust-sublabel {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

/* ==========================================================================
   8. SECTIONS GENERAL
   ========================================================================== */
section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-12);
}

.section-eyebrow {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-3);
}

.section-title {
    text-align: center;
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
    color: var(--color-secondary);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    margin: var(--space-4) auto 0;
    border-radius: var(--radius-full);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ==========================================================================
   9. SERVICES SECTION
   ========================================================================== */
.services {
    background: var(--surface-secondary);
}

.service-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--space-12);
}

.service-intro p {
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
    color: var(--color-gray-600);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-12);
}

.service-card {
    background: var(--surface-elevated);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition-slow);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-100);
}

.service-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.service-card-content {
    padding: var(--space-6);
}

.service-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
    color: var(--color-secondary);
}

.service-card p {
    font-size: var(--text-sm);
    color: var(--color-gray-600);
    margin-bottom: 0;
}

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

.service-list ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-4);
}

.service-list li {
    display: flex;
    align-items: center;
    padding: var(--space-4) var(--space-5);
    background: var(--surface-elevated);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition-base);
}

.service-list li:hover {
    border-color: var(--color-primary-100);
    background: var(--color-primary-50);
}

.service-list li i {
    color: var(--color-primary);
    margin-right: var(--space-4);
    font-size: 1.1rem;
    flex-shrink: 0;
}

/* ==========================================================================
   10. INDIVIDUALS SECTION
   ========================================================================== */
.individuals {
    background: var(--surface-primary);
}

.individual-services {
    max-width: 1000px;
    margin: 0 auto;
}

.service-section {
    margin-bottom: var(--space-12);
    text-align: center;
}

.service-section h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-4);
    color: var(--color-secondary);
}

.service-section p {
    font-size: var(--text-base);
    margin-bottom: var(--space-4);
    color: var(--color-gray-600);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.services-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-4);
    margin: var(--space-8) 0;
}

.services-images img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-slow);
}

.services-images img:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-lg);
}

.tax-process ul {
    list-style: none;
    text-align: left;
    max-width: 650px;
    margin: var(--space-8) auto;
    background: var(--surface-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.tax-process li {
    padding: var(--space-3) 0;
    padding-left: var(--space-8);
    position: relative;
    color: var(--color-gray-700);
    border-bottom: 1px solid var(--color-gray-200);
}

.tax-process li:last-child {
    border-bottom: none;
}

.tax-process li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tax-process li::after {
    content: '✓';
    position: absolute;
    left: 5px;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    font-size: 0.7rem;
    font-weight: bold;
}

/* ==========================================================================
   11. CONTACT SECTION
   ========================================================================== */
.contact {
    background: var(--surface-secondary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.contact-card {
    background: var(--surface-elevated);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-100);
}

.contact-card h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-2);
    color: var(--color-secondary);
}

.contact-card .title {
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--space-6);
    font-size: var(--text-base);
}

.contact-details p {
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    font-size: var(--text-sm);
}

.contact-details i {
    color: var(--color-primary);
    margin-right: var(--space-4);
    width: 20px;
    flex-shrink: 0;
}

.contact-details a {
    color: var(--color-gray-700);
    text-decoration: none;
    transition: color var(--transition-base);
}

.contact-details a:hover {
    color: var(--color-primary);
}

.certification {
    text-align: center;
    background: var(--surface-elevated);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-100);
}

.itaa-logo {
    width: 100px;
    margin: 0 auto var(--space-3);
}

.cert-number {
    font-weight: 600;
    color: var(--color-gray-600);
    font-size: var(--text-sm);
}

/* Contact Form */
.contact-form {
    background: var(--surface-elevated);
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-100);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-4);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-family: var(--font-body);
    transition: all var(--transition-base);
    background: var(--surface-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-100);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-gray-400);
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    padding: var(--space-4) var(--space-8);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    font-weight: 600;
    font-family: var(--font-body);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(215, 87, 30, 0.3);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(215, 87, 30, 0.4);
}

/* ==========================================================================
   12. FOOTER
   ========================================================================== */
.footer {
    background: var(--color-secondary);
    color: white;
    padding: var(--space-12) 0 var(--space-6);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-10);
    margin-bottom: var(--space-8);
}

.footer-section h4 {
    margin-bottom: var(--space-4);
    color: var(--color-primary-light);
    font-size: var(--text-base);
    font-weight: 600;
}

.footer-section p {
    margin-bottom: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-gray-300);
}

.footer-section a {
    color: var(--color-gray-300);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-section a:hover {
    color: var(--color-primary-light);
}

.footer-logo {
    width: 80px;
    margin-bottom: var(--space-3);
    border-radius: var(--radius-md);
    background: white;
    padding: var(--space-2);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-secondary-light);
    color: var(--color-gray-400);
    font-size: var(--text-sm);
}

/* ==========================================================================
   13. ANIMATIONS
   ========================================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==========================================================================
   14. ACCESSIBILITY
   ========================================================================== */
/* Skip Link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-secondary);
    color: white;
    padding: var(--space-4) var(--space-8);
    z-index: 10000;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    font-weight: 600;
    transition: top var(--transition-base);
}

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

/* Focus States */
:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

/* Reduced Motion */
@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;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .service-card,
    .contact-card,
    .certification {
        border: 2px solid currentColor;
    }
}

/* ==========================================================================
   15. RESPONSIVE DESIGN
   ========================================================================== */

/* Tablet */
@media screen and (max-width: 1024px) {
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media screen and (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: rgba(255, 255, 255, 0.98);
        width: 100%;
        height: calc(100vh - 80px);
        text-align: center;
        transition: left var(--transition-slow);
        box-shadow: var(--shadow-lg);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        padding: var(--space-8) var(--space-6);
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 0;
    }

    .nav-link {
        display: block;
        padding: var(--space-4) 0;
        font-size: var(--text-lg);
        border-bottom: 1px solid var(--color-gray-100);
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-content {
        padding: var(--space-4);
    }

    .hero-cta-group {
        flex-direction: column;
        align-items: center;
    }

    .btn-lg {
        width: 100%;
        max-width: 280px;
    }

    .hero-trust {
        flex-direction: column;
        gap: var(--space-3);
    }

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

    .trust-item {
        justify-content: flex-start;
        padding: var(--space-4);
        background: var(--surface-secondary);
        border-radius: var(--radius-lg);
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

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

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

    .services-images {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .footer-section {
        padding-bottom: var(--space-6);
        border-bottom: 1px solid var(--color-secondary-light);
    }

    .footer-section:last-child {
        border-bottom: none;
    }
}

/* Small Mobile */
@media screen and (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }

    .cta-button {
        padding: var(--space-3) var(--space-6);
    }

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

    .service-list li {
        font-size: var(--text-sm);
    }
}

/* Touch Devices */
@media (hover: none) and (pointer: coarse) {
    .nav-link,
    .btn,
    .cta-button,
    .submit-btn {
        min-height: 44px;
    }

    .service-card:hover,
    .services-images img:hover {
        transform: none;
    }
}

/* ==========================================================================
   16. UTILITIES & HELPERS
   ========================================================================== */

/* Scroll Offset for Fixed Navbar */
section {
    scroll-margin-top: 80px;
}

/* Loading Animation */
.loading {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
}

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Margin Utilities */
.mb-1 { margin-bottom: var(--space-4); }
.mb-2 { margin-bottom: var(--space-8); }
.mb-3 { margin-bottom: var(--space-12); }
.mt-1 { margin-top: var(--space-4); }
.mt-2 { margin-top: var(--space-8); }
.mt-3 { margin-top: var(--space-12); }

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}