/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary-color: #1E40AF;      /* Deep blue */
    --secondary-color: #64748B;     /* Light blue/gray */
    --accent-color: #3B82F6;       /* Bright blue */
    --white: #FFFFFF;
    --light-gray: #F8FAFC;
    --dark-gray: #334155;
    --text-dark: #1E293B;
    --text-light: #64748B;
    
    /* Gradients */
    --primary-gradient: linear-gradient(135deg, #1E40AF 0%, #3B82F6 100%);
    --accent-gradient: linear-gradient(135deg, #3B82F6 0%, #60A5FA 100%);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Border Radius */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
    
    /* 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: 0.15s ease-out;
    --transition-base: 0.3s ease-out;
    --transition-slow: 0.5s ease-out;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

/* ===== UTILITIES ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.section-subtitle {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: var(--spacing-lg);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius-lg);
    font-family: var(--font-family);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(30, 64, 175, 0.1);
    transition: all var(--transition-base);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo .logo-container {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.nav-logo .logo-line-1 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    display: flex;
    align-items: baseline;
}

.nav-logo .logo-line-2 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-light);
    letter-spacing: 2px;
    margin-top: -4px;
    margin-left: 2px;
}

.nav-logo .logo-ai {
    color: var(--accent-color);
    font-weight: 800;
}

.nav-logo .logo-zer {
    color: var(--primary-color);
    font-weight: 800;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-2xl);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--accent-color);
}

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

.nav-cta {
    background: var(--accent-gradient);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-weight: 600;
}

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

.nav-cta:hover {
    color: var(--white);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle .bar {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    margin: 3px 0;
    transition: var(--transition-base);
}

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(30, 64, 175, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.02) 0%, rgba(59, 130, 246, 0.02) 100%);
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding-top: 70px;
}

.hero-title {
    margin-bottom: var(--spacing-xl);
}

.hero-title-main {
    display: block;
    font-size: var(--font-size-5xl);
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
}

.hero-title-accent {
    display: block;
    font-size: var(--font-size-5xl);
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    margin-top: var(--spacing-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--accent-color);
    display: block;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: var(--spacing-xs);
}

/* ===== VALUE PROPOSITION SECTION ===== */
.value-prop {
    padding: var(--spacing-4xl) 0;
    background: var(--light-gray);
}

.value-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2xl);
    justify-content: center;
    align-items: stretch;
}

.value-card {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    transition: transform var(--transition-base);
    position: relative;
    overflow: hidden;
    flex: 0 1 350px;
    min-width: 300px;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
}

.value-card:hover {
    transform: translateY(-5px);
}

.value-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--accent-gradient);
    border-radius: 50%;
    color: var(--white);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
}

.value-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.value-description {
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== SOLUTIONS SECTION ===== */
.solutions {
    padding: var(--spacing-4xl) 0;
    background: var(--white);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.solutions-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
    justify-content: center;
    align-items: stretch;
}

.solution-card {
    background: var(--white);
    border: 2px solid rgba(30, 64, 175, 0.1);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    flex: 0 1 400px;
    min-width: 350px;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-color);
}



.solution-card-header {
    padding: var(--spacing-2xl);
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.02) 0%, rgba(59, 130, 246, 0.02) 100%);
    position: relative;
}

.solution-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 50%;
    color: var(--white);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    transition: transform var(--transition-base);
}

.solution-card:hover .solution-icon {
    transform: scale(1.1);
}

.solution-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
}

.solution-preview {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.solution-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--accent-gradient);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.solution-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.solution-toggle i {
    transition: transform var(--transition-base);
}



/* Solution details always visible */
.solution-details {
    padding: var(--spacing-2xl);
    background: var(--white);
    border-top: 1px solid rgba(30, 64, 175, 0.1);
}

.solution-section {
    margin-bottom: var(--spacing-xl);
}

.solution-section:last-child {
    margin-bottom: 0;
}

.solution-section-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.solution-section-title i {
    color: var(--accent-color);
    width: 20px;
}

.solution-section p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.value-proposition {
    font-size: var(--font-size-lg);
    color: var(--primary-color);
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
}

.value-proposition strong {
    font-weight: 700;
}

.capability-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.capability-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--text-light);
    line-height: 1.5;
}

.capability-list li::before {
    content: '✓';
    color: var(--accent-color);
    font-weight: bold;
    flex-shrink: 0;
    margin-top: 2px;
}

.results-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    justify-content: center;
}

.result-highlight {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(30, 64, 175, 0.05) 100%);
    border-radius: var(--border-radius-md);
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: var(--primary-color);
    flex: 0 1 auto;
    min-width: 140px;
    white-space: nowrap;
}

.result-highlight i {
    color: var(--accent-color);
    flex-shrink: 0;
}

/* ===== CASE STUDIES SECTION ===== */
.case-studies {
    padding: var(--spacing-4xl) 0;
    background: var(--light-gray);
}

.case-studies-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2xl);
    justify-content: center;
    align-items: stretch;
}

.case-study-card {
    background: var(--white);
    border: 1px solid rgba(30, 64, 175, 0.1);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    flex: 0 1 550px;
    min-width: 450px;
}

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

.case-study-header {
    background: var(--primary-gradient);
    color: var(--white);
    padding: var(--spacing-xl);
}

.case-study-industry {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    opacity: 0.9;
    margin-bottom: var(--spacing-md);
}

.case-study-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin: 0;
}

.case-study-content {
    padding: var(--spacing-xl);
}

.case-study-section {
    margin-bottom: var(--spacing-xl);
}

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

.case-study-section-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.case-study-section p {
    color: var(--text-light);
    line-height: 1.6;
}

.results-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    justify-content: center;
}

.result-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--light-gray);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    flex: 0 1 auto;
    min-width: 180px;
}

.result-item i {
    color: var(--accent-color);
    flex-shrink: 0;
}

/* ===== APPROACH SECTION ===== */
.approach {
    padding: var(--spacing-4xl) 0;
    background: var(--light-gray);
}

.approach-content {
    max-width: 1100px;
    margin: 0 auto;
}

.approach-main {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.approach-description {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    line-height: 1.7;
}

.approach-points {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    max-width: 1000px;
    margin: 0 auto;
    justify-items: center;
}

.approach-point {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-md);
    height: 100%;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    max-width: 350px;
    width: 100%;
}

.approach-point:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.approach-point-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: var(--accent-gradient);
    border-radius: var(--border-radius-lg);
    color: var(--white);
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.approach-point p {
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

/* ===== ABOUT SECTION ===== */
.about {
    padding: var(--spacing-4xl) 0;
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.about-text {
    font-size: var(--font-size-lg);
    line-height: 1.7;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
}

.about-text p:last-child {
    margin-bottom: 0;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    align-items: center;
}

.feature {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--light-gray);
    border-radius: var(--border-radius-xl);
    max-width: 280px;
    width: 100%;
}

.feature i {
    font-size: var(--font-size-3xl);
    color: var(--accent-color);
    margin-bottom: var(--spacing-lg);
}

.feature h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.feature p {
    color: var(--text-light);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* ===== CALENDAR SECTION ===== */
.calendar-section {
    padding: var(--spacing-4xl) 0;
    background: var(--white);
}

.calendar-content {
    max-width: 1000px;
    margin: 0 auto;
}

.calendar-description {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.calendar-description p {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    line-height: 1.7;
    max-width: 800px;
    margin: 0 auto;
}

.calendar-embed-container {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid #E5E7EB;
}

#my-cal-inline-15min {
    width: 100%;
    height: 700px;
    border: none;
}

/* Responsive adjustments for calendar */
@media (max-width: 768px) {
    .calendar-content {
        padding: 0 var(--spacing-md);
    }
    
    #my-cal-inline-15min {
        height: 600px;
    }
}

/* ===== CONTACT SECTION ===== */
.contact {
    padding: var(--spacing-4xl) 0;
    background: var(--light-gray);
}

.contact-content {
    max-width: 800px;
    margin: 0 auto;
}

.contact-description {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.contact-description p {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    line-height: 1.7;
}

.contact-form-container {
    background: var(--white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-3xl);
}

.contact-form h4 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-2xl);
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-xl);
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid #E2E8F0;
    border-radius: var(--border-radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

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

.contact-form .btn {
    width: 100%;
    justify-content: center;
    margin-top: var(--spacing-lg);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-3xl) 0 var(--spacing-xl) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-logo .logo-container {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.footer-logo .logo-line-1 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    display: flex;
    align-items: baseline;
}

.footer-logo .logo-line-2 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
    letter-spacing: 2px;
    margin-top: -4px;
    margin-left: 2px;
}

.footer-logo .logo-ai {
    color: var(--accent-color);
    font-weight: 800;
}

.footer-logo .logo-zer {
    color: var(--white);
    font-weight: 800;
}

.footer-logo p {
    margin-top: var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-xl);
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--spacing-sm);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-xl);
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) and (min-width: 769px) {
    /* Tablet: 2 cards per row, third card centered */
    .approach-points {
        grid-template-columns: repeat(2, 1fr);
        max-width: 700px;
    }
    
    .approach-point:nth-child(3) {
        grid-column: 1 / -1;
        max-width: 350px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-xl) 0;
        gap: var(--spacing-lg);
    }

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

    .nav-toggle {
        display: flex;
    }

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

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

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

    /* Hero */
    .hero-content {
        padding-top: 100px; /* Increased from 70px for better mobile spacing */
    }
    
    .hero-title-main,
    .hero-title-accent {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-lg);
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    /* Sections */
    .section-title {
        font-size: var(--font-size-2xl);
    }

    .case-studies-grid {
        grid-template-columns: 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
        text-align: center;
    }

    .approach-points {
        grid-template-columns: 1fr;
    }

    .approach-point {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    /* Extra padding for very small screens */
    .hero-content {
        padding-top: 110px;
    }

    .hero-title-main,
    .hero-title-accent {
        font-size: var(--font-size-xl);
    }

    .value-card,
    .solution-card,
    .case-study-card {
        flex: 1 1 100%;
        min-width: auto;
        max-width: 100%;
    }

    .value-grid,
    .case-studies-grid,
    .solutions-grid {
        flex-direction: column;
        align-items: center;
    }

    .case-study-card {
        min-width: auto;
    }

    .contact-form-container {
        padding: var(--spacing-xl);
    }
}

/* ===== FORM ERROR STYLES ===== */
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.error-message {
    color: #ef4444;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.error-message::before {
    content: '⚠️';
    font-size: var(--font-size-xs);
}

/* Active nav link */
.nav-link.active {
    color: var(--accent-color);
}

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

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* Animation classes */
.animate-fade-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-left {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fade-right {
    animation: fadeInRight 0.6s ease-out;
}

/* Intersection Observer animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}