/* ===================================
   Reset & Base Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Petrol Blue & Gray Tones */
    --primary-color: #1a7f8e;
    --primary-dark: #145c68;
    --primary-light: #2a9faf;
    --accent-color: #26b5c9;
    
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    overflow-x: hidden;
}

/* ===================================
   Container & Layout
   =================================== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.logo i {
    font-size: 1.75rem;
}

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

.nav-link {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    position: relative;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
}

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

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

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

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--gray-700);
    border-radius: 3px;
    transition: all var(--transition-base);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--spacing-3xl) + 60px) 0 var(--spacing-3xl);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 50%, #e0f2f5 100%);
    z-index: -1;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(26, 127, 142, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

.hero-background::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(38, 181, 201, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 15s infinite ease-in-out reverse;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(50px, 50px) scale(1.1);
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(249, 250, 251, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: var(--font-weight-extrabold);
    line-height: 1.1;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.hero-title .highlight {
    color: var(--primary-color);
    position: relative;
    display: inline-block;
}

.hero-description {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-2xl);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
    max-width: 700px;
    margin: 0 auto;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-200);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 36px;
    border: 2px solid var(--primary-color);
    border-radius: 20px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(10px);
    }
    60% {
        transform: translateX(-50%) translateY(5px);
    }
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(15px);
    }
}

/* ===================================
   Section Base Styles
   =================================== */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
}

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-weight-bold);
    color: var(--gray-900);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

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

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

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

/* ===================================
   Process Section
   =================================== */
.process-section {
    background-color: white;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.process-card {
    position: relative;
    padding: var(--spacing-xl);
    background-color: var(--gray-50);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.process-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    background-color: white;
}

.process-number {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-200);
    line-height: 1;
}

.process-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: white;
    font-size: 2rem;
    box-shadow: var(--shadow-md);
}

.process-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.process-description {
    color: var(--gray-600);
    line-height: 1.7;
}

/* ===================================
   Calculator Section
   =================================== */
.calculator-section {
    background: linear-gradient(180deg, white 0%, var(--gray-50) 100%);
}

.calculator-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.calculator-card,
.results-card {
    background-color: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.calculator-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--gray-200);
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--gray-600);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: -2px;
}

.tab-btn:hover {
    color: var(--primary-color);
    background-color: var(--gray-50);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.calculator-content {
    position: relative;
    min-height: 400px;
}

.tab-content {
    display: none;
    animation: fadeIn var(--transition-base);
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tab-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
}

.input-group {
    margin-bottom: var(--spacing-md);
}

.input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper input {
    width: 100%;
    padding: 0.875rem var(--spacing-md);
    padding-right: 3rem;
    font-size: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    background-color: var(--gray-50);
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: white;
    box-shadow: 0 0 0 3px rgba(26, 127, 142, 0.1);
}

.input-suffix {
    position: absolute;
    right: var(--spacing-md);
    font-weight: var(--font-weight-medium);
    color: var(--gray-500);
}

/* Results Card */
.results-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-xl);
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--gray-100);
}

.result-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
    color: var(--gray-700);
}

.result-value {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-900);
}

.text-success {
    color: var(--success-color) !important;
}

.text-danger {
    color: var(--danger-color) !important;
}

.text-primary {
    color: var(--primary-color) !important;
}

.result-divider {
    height: 1px;
    background-color: var(--gray-300);
    margin: var(--spacing-md) 0;
}

.result-total {
    border-bottom: none;
    padding-top: var(--spacing-md);
}

.result-total .result-value {
    font-size: 1.75rem;
}

.budget-status {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--gray-50);
    border-radius: var(--radius-lg);
    display: flex;
    gap: var(--spacing-sm);
}

.status-icon {
    flex-shrink: 0;
    font-size: 1.25rem;
}

.status-text {
    font-size: 0.9375rem;
    color: var(--gray-700);
    line-height: 1.6;
    margin: 0;
}

.chart-wrapper {
    margin-top: var(--spacing-xl);
    height: 300px;
}

/* ===================================
   Testimonials Section
   =================================== */
.testimonials-section {
    background-color: white;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial-card {
    background-color: var(--gray-50);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
    background-color: white;
}

.testimonial-rating {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    color: #fbbf24;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--gray-700);
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.author-name {
    font-weight: var(--font-weight-semibold);
    color: var(--gray-900);
}

.author-location {
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* ===================================
   FAQ Section
   =================================== */
.faq-section {
    background: linear-gradient(180deg, white 0%, var(--gray-50) 100%);
}

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

.faq-item {
    background-color: white;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--gray-900);
    transition: all var(--transition-base);
}

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

.faq-question i {
    color: var(--primary-color);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--gray-600);
    line-height: 1.8;
}

/* ===================================
   Contact Section
   =================================== */
.contact-section {
    background-color: white;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.contact-info .section-label,
.contact-info .section-title,
.contact-info .section-description {
    text-align: left;
    margin-left: 0;
    margin-right: 0;
}

.contact-details {
    margin: var(--spacing-xl) 0;
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-text {
    flex: 1;
}

.contact-label {
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-xs);
}

.contact-text a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

.contact-text a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.contact-text p {
    color: var(--gray-700);
    margin: 0;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 45px;
    height: 45px;
    background-color: var(--gray-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-700);
    font-size: 1.125rem;
    text-decoration: none;
    transition: all var(--transition-base);
}

.social-link:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

/* Contact Form */
.contact-form-wrapper {
    background-color: var(--gray-50);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

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

.contact-form label {
    display: block;
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.875rem var(--spacing-md);
    font-size: 1rem;
    font-family: var(--font-primary);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    background-color: white;
    transition: all var(--transition-base);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 127, 142, 0.1);
}

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

.contact-form button[type="submit"] {
    width: 100%;
    margin-top: var(--spacing-md);
    justify-content: center;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: white;
    text-decoration: none;
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    font-size: 1.75rem;
    color: var(--primary-light);
}

.footer-description {
    color: var(--gray-400);
    line-height: 1.7;
}

.footer-links h4 {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: white;
    margin-bottom: var(--spacing-md);
}

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

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

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
    display: inline-block;
}

.footer-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: var(--primary-light);
    transition: width var(--transition-base);
}

.footer-links a:hover {
    color: var(--primary-light);
    transform: translateX(3px);
}

.footer-links a:hover::after {
    width: 100%;
}

.footer-newsletter h4 {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: white;
    margin-bottom: var(--spacing-sm);
}

.footer-newsletter p {
    color: var(--gray-400);
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-xs);
}

.newsletter-form input {
    flex: 1;
    padding: 0.75rem var(--spacing-md);
    border: 2px solid var(--gray-700);
    border-radius: var(--radius-md);
    background-color: var(--gray-800);
    color: white;
    font-size: 0.9375rem;
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.newsletter-form button {
    padding: 0.75rem var(--spacing-md);
    background-color: var(--primary-color);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    transition: all var(--transition-base);
}

.newsletter-form button:hover {
    background-color: var(--primary-dark);
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-800);
    text-align: center;
    color: var(--gray-500);
}

/* ===================================
   Animations
   =================================== */
.fade-in-up {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

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

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .calculator-wrapper {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: white;
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
        transition: left var(--transition-base);
        box-shadow: var(--shadow-xl);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .process-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .calculator-tabs {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 4rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
}