/* -------------------------------------------------------------
   Deepa Balodi - International Accounting & Bookkeeping Website
   Main Styling Sheet - Unified Design System
   ------------------------------------------------------------- */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400&display=swap');

/* CSS Variables for design system */
:root {
    /* Color Palette */
    --clr-bg: #f8fafc;
    --clr-bg-white: #ffffff;
    --clr-primary: #0f172a; /* Slate 900 */
    --clr-secondary: #334155; /* Slate 700 */
    --clr-muted: #64748b; /* Slate 500 */
    --clr-border: #e2e8f0; /* Slate 200 */
    --clr-border-light: #f1f5f9; /* Slate 100 */
    
    --clr-accent: #0f766e; /* Teal 700 */
    --clr-accent-hover: #115e59; /* Teal 800 */
    --clr-accent-light: #ccfbf1; /* Teal 100 */
    --clr-accent-bg: #f0fdfa; /* Teal 50 */
    
    --clr-error: #ef4444;
    --clr-success: #10b981;
    
    /* Fonts */
    --ff-body: 'Inter', sans-serif;
    --ff-heading: 'Playfair Display', serif;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.05), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
    --shadow-glow: 0 0 20px rgba(13, 148, 136, 0.15);
    
    /* Layout */
    --max-width: 1200px;
    --border-radius: 12px;
    --border-radius-sm: 6px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

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

body {
    background-color: var(--clr-bg);
    color: var(--clr-secondary);
    font-family: var(--ff-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--clr-primary);
    font-family: var(--ff-heading);
    font-weight: 700;
    line-height: 1.25;
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1.25rem;
}

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

ul {
    list-style: none;
}

/* Layout Utilities */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
    width: 100%;
}

.section {
    padding: 6rem 0;
}

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

.text-center { text-align: center; }
.text-accent { color: var(--clr-accent); }

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    align-items: center;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 500;
    font-family: var(--ff-body);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-normal);
    text-align: center;
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--clr-accent);
    color: var(--clr-bg-white);
}

.btn-primary:hover {
    background-color: var(--clr-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background-color: transparent;
    color: var(--clr-accent);
    border: 1px solid var(--clr-accent);
}

.btn-secondary:hover {
    background-color: var(--clr-accent-bg);
    transform: translateY(-2px);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition-normal);
    background-color: rgba(248, 250, 252, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--clr-border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 5.5rem;
    transition: var(--transition-normal);
}

.header.scrolled .nav-container {
    height: 4.5rem;
}

.logo {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-family: var(--ff-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--clr-primary);
    line-height: 1.1;
}

.logo-sub {
    font-family: var(--ff-body);
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--clr-accent);
    font-weight: 600;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--clr-secondary);
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    background: none;
    border: none;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--clr-primary);
    transition: var(--transition-normal);
}

/* Hero Section */
.hero {
    padding-top: 10rem;
    padding-bottom: 6rem;
    background: radial-gradient(circle at 80% 20%, rgba(13, 148, 136, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 10% 80%, rgba(15, 23, 42, 0.03) 0%, transparent 40%);
}

.hero-subtitle {
    font-family: var(--ff-body);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-weight: 700;
    color: var(--clr-accent);
    margin-bottom: 1rem;
    display: block;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.hero-text {
    font-size: 1.15rem;
    color: var(--clr-secondary);
    margin-bottom: 2.5rem;
    max-width: 550px;
}

.hero-ctas {
    display: flex;
    gap: 1rem;
}

.hero-img-container {
    position: relative;
    display: flex;
    justify-content: center;
}

.hero-img {
    width: 100%;
    max-width: 480px;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--clr-bg-white);
}

.hero-badge {
    position: absolute;
    bottom: 2rem;
    left: -1rem;
    background-color: var(--clr-bg-white);
    padding: 1.25rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-left: 4px solid var(--clr-accent);
}

.hero-badge-num {
    font-size: 2rem;
    font-weight: 700;
    color: var(--clr-accent);
    line-height: 1;
}

.hero-badge-text {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--clr-primary);
}

/* Trust Banner */
.trust-banner {
    padding: 2.5rem 0;
    background-color: var(--clr-bg-white);
    border-top: 1px solid var(--clr-border);
    border-bottom: 1px solid var(--clr-border);
}

.trust-title {
    font-family: var(--ff-body);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--clr-muted);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.trust-grid {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.trust-badge {
    font-family: var(--ff-body);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--clr-primary);
    background-color: var(--clr-bg);
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    border: 1px dashed var(--clr-border);
    transition: var(--transition-fast);
}

.trust-badge:hover {
    color: var(--clr-accent);
    border-color: var(--clr-accent);
    background-color: var(--clr-accent-bg);
}

/* Why Choose Section */
.why-header {
    max-width: 600px;
    margin: 0 auto 4rem auto;
}

.why-card {
    background-color: var(--clr-bg-white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--clr-border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.why-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--clr-accent-light);
}

.why-icon {
    width: 3rem;
    height: 3rem;
    background-color: var(--clr-accent-bg);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-accent);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.why-card h3 {
    margin-bottom: 1rem;
}

.why-card p {
    font-size: 0.95rem;
    color: var(--clr-secondary);
    margin-bottom: 0;
}

/* Service Teasers / Grid */
.service-header {
    max-width: 600px;
    margin: 0 auto 4rem auto;
}

.service-card {
    background-color: var(--clr-bg-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.service-card-img {
    height: 180px;
    background-color: var(--clr-accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--clr-accent);
}

.service-card-content {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.service-card h3 {
    margin-bottom: 0.75rem;
}

.service-card p {
    font-size: 0.925rem;
    color: var(--clr-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.service-card-link {
    font-family: var(--ff-body);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--clr-accent);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.service-card-link:hover {
    color: var(--clr-accent-hover);
}

/* Call To Action Banner */
.cta-banner {
    background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-accent) 100%);
    color: var(--clr-bg-white);
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.cta-banner h2 {
    color: var(--clr-bg-white);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-banner p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2.5rem auto;
    opacity: 0.9;
}

/* Footer styling */
.footer {
    background-color: var(--clr-primary);
    color: #94a3b8; /* slate-400 */
    padding: 5rem 0 2rem 0;
    font-size: 0.9rem;
    border-top: 1px solid #1e293b;
}

.footer h3, .footer h4 {
    color: var(--clr-bg-white);
    margin-bottom: 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-info p {
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.footer-socials {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 2.25rem;
    height: 2.25rem;
    background-color: #1e293b;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-bg-white);
    transition: var(--transition-fast);
}

.social-icon:hover {
    background-color: var(--clr-accent);
    transform: translateY(-2px);
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a:hover {
    color: var(--clr-bg-white);
    padding-left: 4px;
}

.footer-contact li {
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.footer-contact-icon {
    color: var(--clr-accent-light);
    margin-top: 0.2rem;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid #1e293b;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Page Headers (Subpages) */
.page-header {
    padding-top: 10rem;
    padding-bottom: 4rem;
    background: linear-gradient(180deg, var(--clr-bg-white) 0%, var(--clr-bg) 100%);
    border-bottom: 1px solid var(--clr-border);
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 0.75rem;
}

.page-breadcrumbs {
    font-size: 0.85rem;
    color: var(--clr-muted);
}

.page-breadcrumbs a {
    color: var(--clr-secondary);
}

.page-breadcrumbs a:hover {
    color: var(--clr-accent);
}

/* Services Detailed Elements */
.service-detail-section {
    margin-bottom: 5rem;
}

.service-detail-section:last-of-type {
    margin-bottom: 0;
}

.service-badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    background-color: var(--clr-accent-bg);
    color: var(--clr-accent);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--border-radius-sm);
    margin-bottom: 1rem;
}

.service-detail-section h2 {
    margin-bottom: 1.5rem;
}

.service-detail-section ul {
    margin-top: 1.5rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.service-detail-section li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
}

.bullet-check {
    color: var(--clr-accent);
    font-size: 1.15rem;
}

/* Pricing Widget & Calculator */
.pricing-section {
    background-color: var(--clr-bg-white);
    border-top: 1px solid var(--clr-border);
}

.pricing-title {
    max-width: 600px;
    margin: 0 auto 4rem auto;
}

.pricing-card {
    background-color: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    padding: 3rem 2.5rem;
    display: flex;
    flex-direction: column;
    position: relative;
}

.pricing-card.popular {
    background-color: var(--clr-bg-white);
    border-color: var(--clr-accent);
    box-shadow: var(--shadow-lg);
}

.pricing-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background-color: var(--clr-accent);
    color: var(--clr-bg-white);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.35rem 0.75rem;
    border-radius: 50px;
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--clr-primary);
    margin: 1.5rem 0;
    font-family: var(--ff-body);
}

.pricing-price span {
    font-size: 1rem;
    color: var(--clr-muted);
    font-weight: 400;
}

.pricing-features {
    margin: 2rem 0;
    flex-grow: 1;
}

.pricing-features li {
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
}

/* Interactive Calculator Styling */
.calculator-container {
    background-color: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    padding: 3.5rem;
    margin-top: 5rem;
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 3.5rem;
    margin-top: 2.5rem;
}

.calc-control {
    margin-bottom: 2rem;
}

.calc-label {
    display: block;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    color: var(--clr-primary);
}

.calc-slider {
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    border-radius: 3px;
    background: var(--clr-border);
    outline: none;
    margin-bottom: 0.5rem;
}

.calc-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--clr-accent);
    cursor: pointer;
    transition: var(--transition-fast);
}

.calc-slider::-webkit-slider-thumb:hover {
    background: var(--clr-accent-hover);
    transform: scale(1.1);
}

.slider-values {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--clr-muted);
}

.calc-checkboxes {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0.75rem;
    background-color: var(--clr-bg-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
}

.checkbox-label:hover {
    border-color: var(--clr-accent);
    background-color: var(--clr-accent-bg);
}

.checkbox-label input {
    accent-color: var(--clr-accent);
    width: 1rem;
    height: 1rem;
}

.calc-results-card {
    background-color: var(--clr-bg-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-shadow: var(--shadow-md);
    text-align: center;
}

.calc-price-display {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--clr-accent);
    margin: 1.5rem 0;
    font-family: var(--ff-body);
}

.calc-price-display span {
    font-size: 1.25rem;
    color: var(--clr-muted);
    font-weight: 400;
}

/* About Page Elements */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: flex-start;
}

.about-img-box {
    position: relative;
}

.about-img-box img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--clr-bg-white);
}

.about-experience-badge {
    position: absolute;
    top: -1.5rem;
    right: -1.5rem;
    background-color: var(--clr-accent);
    color: var(--clr-bg-white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.exp-years {
    font-size: 2.25rem;
    font-weight: 700;
    display: block;
    line-height: 1;
}

.exp-text {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.about-content h2 {
    margin-bottom: 1.5rem;
}

.about-content p {
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

.credentials-section {
    background-color: var(--clr-bg-white);
    padding: 5rem 0;
    border-top: 1px solid var(--clr-border);
    border-bottom: 1px solid var(--clr-border);
}

.market-card {
    background-color: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition-normal);
}

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

.market-flag {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.market-card h3 {
    margin-bottom: 0.75rem;
}

.market-card p {
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* Toolstack grid */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.tool-card {
    background-color: var(--clr-bg-white);
    border: 1px solid var(--clr-border);
    padding: 1.5rem;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition-fast);
}

.tool-card:hover {
    border-color: var(--clr-accent);
    box-shadow: var(--shadow-sm);
}

.tool-icon {
    font-size: 2rem;
    color: var(--clr-accent);
}

.tool-info h4 {
    font-family: var(--ff-body);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.15rem;
}

.tool-info p {
    font-size: 0.75rem;
    margin-bottom: 0;
    color: var(--clr-muted);
}

/* Contact Page Layout */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-info-card {
    background-color: var(--clr-bg-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    padding: 3rem;
}

.contact-info-card h2 {
    margin-bottom: 1.5rem;
}

.contact-method-list {
    margin-top: 2.5rem;
}

.contact-method-item {
    margin-bottom: 2rem;
    display: flex;
    gap: 1rem;
}

.contact-method-item:last-child {
    margin-bottom: 0;
}

.contact-method-icon {
    width: 2.5rem;
    height: 2.5rem;
    background-color: var(--clr-accent-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-accent);
    font-size: 1.15rem;
    flex-shrink: 0;
}

.contact-method-details h4 {
    font-family: var(--ff-body);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.contact-method-details p {
    font-size: 0.9rem;
    color: var(--clr-muted);
    margin-bottom: 0;
}

.contact-method-details a:hover {
    color: var(--clr-accent);
}

.contact-form-card {
    background-color: var(--clr-bg-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius);
    padding: 3.5rem;
    box-shadow: var(--shadow-sm);
}

.contact-form-card h2 {
    margin-bottom: 0.5rem;
}

.form-intro {
    font-size: 0.95rem;
    color: var(--clr-muted);
    margin-bottom: 2.5rem;
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--clr-primary);
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--ff-body);
    font-size: 0.925rem;
    border: 1px solid var(--clr-border);
    border-radius: var(--border-radius-sm);
    background-color: var(--clr-bg);
    color: var(--clr-primary);
    outline: none;
    transition: var(--transition-fast);
}

.form-control:focus {
    border-color: var(--clr-accent);
    background-color: var(--clr-bg-white);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

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

/* Form Validation styles */
.form-control.invalid {
    border-color: var(--clr-error);
    background-color: #fef2f2;
}

.form-control.valid {
    border-color: var(--clr-success);
}

.error-message {
    color: var(--clr-error);
    font-size: 0.75rem;
    margin-top: 0.25rem;
    display: none;
}

.form-control.invalid + .error-message {
    display: block;
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

/* Responsive adjustments */
@media (max-width: 1024px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .tool-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--clr-bg-white);
        border-bottom: 1px solid var(--clr-border);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        box-shadow: var(--shadow-lg);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: var(--transition-normal);
    }
    
    .nav-menu.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .nav-btn {
        width: 100%;
    }
    
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .hero {
        padding-top: 8rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-img-container {
        margin-top: 2rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .calculator-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .calc-checkboxes {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .about-experience-badge {
        right: 1rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .form-group-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .service-detail-section ul {
        grid-template-columns: 1fr;
    }
}