:root {
    /* Clean, Professional Color Palette */
    --primary: #2563eb;        /* Professional blue */
    --primary-dark: #1d4ed8;   /* Darker blue */
    --primary-light: #3b82f6;  /* Lighter blue */
    --secondary: #64748b;      /* Professional gray */
    --secondary-dark: #475569; /* Darker gray */
    --accent: #4768af;         /* Distinct accent color */
    --accent-light: #5b7bc7;

    --dark: #0f172a;           /* Dark backgrounds */
    --dark-light: #1e293b;     /* Lighter dark */
    --success: #10b981;        /* Success color */
    --warning: #f59e0b;        /* Warning color */
    --error: #ef4444;          /* Error color */

    /* Font Variables */
    --font-primary: 'Lexend Deca', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: var(--font-primary);
    --font-body: var(--font-primary);
    --font-display: var(--font-primary);

    /* Font Weights */
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;
}

body {
    font-family: var(--font-body);
    font-weight: var(--font-weight-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Font Classes */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
}

.hero-text {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.2;
    font-weight: var(--font-weight-extrabold);
}

.font-light { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }
.font-extrabold { font-weight: var(--font-weight-extrabold); }
.font-black { font-weight: var(--font-weight-black); }

.animate-fadeIn {
    animation: fadeIn 0.8s ease-out forwards;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

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

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

.card {
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.work-image {
    position: relative;
    background-size: cover;
    background-position: center;
    height: 250px;
}

.service-card {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 1px solid rgba(148, 163, 184, 0.1);
}

.service-card:hover {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-color: rgba(37, 99, 235, 0.2);
}

.service-icon-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.service-icon-secondary {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: white;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    transition: all 0.3s ease;
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--secondary-dark) 0%, var(--secondary) 100%);
}

.contact-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
}

.section-padding {
    padding: 80px 0;
}

@media (min-width: 1024px) {
    .section-padding {
        padding: 100px 0;
    }
}

.hero-text {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.2;
    font-weight: 500;
}

.subtitle {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    line-height: 1.6;
}

.tech-item {
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: #475569;
    border: 1px solid rgba(148, 163, 184, 0.2);
}

.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
}

.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    z-index: 1000;
    transition: width 0.3s ease;
}

/* Portfolio Tabs */
.portfolio-tab {
    padding: 12px 24px;
    border: 2px solid transparent;
    border-radius: 50px;
    background: transparent;
    color: #6b7280;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.portfolio-tab:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.portfolio-tab.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.portfolio-project {
    display: none;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
}

.portfolio-project.active {
    display: block;
    opacity: 1;
}

/* Hide reCAPTCHA badge */
.grecaptcha-badge {
    visibility: hidden;
}