/*
 * IBS Premium Architecture Design System
 */
:root {
    /* Color Palette */
    --color-bg-primary: #0B0F19; /* Deep Navy */
    --color-bg-secondary: #111827; /* Dark Slate */
    --color-bg-glass: rgba(17, 24, 39, 0.7);
    --color-accent: #EAB308; /* Premium Gold/Amber */
    --color-accent-hover: #F59E0B;
    --color-text-main: #F3F4F6;
    --color-text-muted: #9CA3AF;
    --color-border: rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing & Structure */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 8rem;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    
    /* Effects */
    --shadow-glow: 0 0 20px rgba(234, 179, 8, 0.2);
    --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.4);
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-primary);
    color: var(--color-text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: #FFFFFF;
}

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

.text-muted {
    color: var(--color-text-muted);
}

/* Base Layouts */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-xxl) 0;
    position: relative;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-smooth);
    text-decoration: none;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-bg-primary);
    border: none;
    box-shadow: 0 4px 15px rgba(234, 179, 8, 0.3);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(234, 179, 8, 0.5);
}

.btn-outline {
    background-color: transparent;
    color: #FFFFFF;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-outline:hover {
    border-color: #FFFFFF;
    background-color: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
}

/* Utilities */
.glass-panel {
    background: var(--color-bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-card);
}

/* Animations */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-up {
    animation: fadeUp 1s var(--transition-smooth) forwards;
    opacity: 0;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }

/* Header / Navbar */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: all var(--transition-smooth);
    background: transparent;
}

.header.scrolled {
    background: rgba(11, 15, 25, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: #FFFFFF;
    text-decoration: none;
    letter-spacing: -0.02em;
}

.logo i {
    color: var(--color-accent);
}

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

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

.nav-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 5px 0;
    transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
    color: #FFFFFF;
}

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

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

.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    color: #FFFFFF;
    cursor: pointer;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    padding-bottom: var(--spacing-xl);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.05); /* slightly zoomed in for parallax */
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 70% 50%, rgba(11, 15, 25, 0.7) 0%, rgba(11, 15, 25, 0.95) 100%);
    z-index: 1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xxl);
    position: relative;
    z-index: 2;
}

@media (min-width: 992px) {
    .hero-content {
        grid-template-columns: 1.2fr 0.8fr;
        align-items: center;
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    background: rgba(234, 179, 8, 0.1);
    border: 1px solid rgba(234, 179, 8, 0.3);
    color: var(--color-accent);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: clamp(3rem, 5vw, 5rem);
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.hero-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.hero-stat-item {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-top: 4px solid var(--color-accent);
    transform: translateY(0);
    transition: transform var(--transition-smooth);
}

.hero-stat-item:hover {
    transform: translateY(-5px);
}

.stat-num {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 800;
    color: #FFFFFF;
    line-height: 1;
    margin-bottom: 0.5rem;
    text-shadow: var(--shadow-glow);
}

.stat-desc {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

/* General Section Stylings */
.mb-lg { margin-bottom: var(--spacing-lg); }
.center { text-align: center; }
.header-desc { max-width: 700px; margin: 0 auto; line-height: 1.8; }

.section-kicker {
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.section-title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    margin-bottom: var(--spacing-md);
}

/* About Section */
.about-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

@media (min-width: 992px) {
    .about-container {
        grid-template-columns: 1fr 1fr;
    }
}

.about-image {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    padding-bottom: 30px;
    padding-right: 30px;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
    display: block;
}

.about-badge {
    position: absolute;
    bottom: 0;
    right: 0;
    padding: var(--spacing-md) var(--spacing-lg);
    border-left: 4px solid var(--color-accent);
    z-index: 2;
}

.badge-title {
    display: block;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.2rem;
    color: #FFF;
}

.badge-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.feature-item {
    display: flex;
    gap: var(--spacing-md);
    background: rgba(255,255,255,0.02);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(255,255,255,0.05);
    transition: transform var(--transition-fast);
}

.feature-item:hover {
    transform: translateX(10px);
    background: rgba(255,255,255,0.05);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: rgba(234, 179, 8, 0.1);
    color: var(--color-accent);
    border-radius: 50%;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.service-card {
    padding: var(--spacing-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0%;
    background: linear-gradient(180deg, rgba(234, 179, 8, 0.1) 0%, transparent 100%);
    transition: height var(--transition-smooth);
    z-index: 0;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(234, 179, 8, 0.3);
    box-shadow: 0 20px 40px rgba(0,0,0,0.6), inset 0 1px 0 rgba(255,255,255,0.2);
}

.service-card:hover::before {
    height: 100%;
}

.service-icon {
    width: 60px;
    height: 60px;
    background: rgba(11, 15, 25, 0.8);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
    transition: all var(--transition-smooth);
}

.service-card:hover .service-icon {
    background: var(--color-accent);
    color: #0B0F19;
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.service-card p {
    font-size: 0.95rem;
    position: relative;
    z-index: 1;
    flex-grow: 1;
}

/* Projects */
.projects {
    background: #0f121b; /* slightly off primary to distinguish */
}

.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

@media (min-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.project-item {
    position: relative;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    height: 350px;
}

.project-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-smooth);
}

.project-item:hover img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(11, 15, 25, 0.9) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-lg);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-smooth);
}

.project-item:hover .project-overlay {
    opacity: 1;
    transform: translateY(0);
}

.project-overlay h5 {
    color: #FFF;
    font-size: 1.25rem;
    margin-bottom: 0.2rem;
}

.project-overlay p {
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: 500;
}

/* Calculator Wizard */
.calculator {
    /* Using a subtle pattern fallback with primary bg */
    /* Pattern from Subtle Patterns (Toptal) - CC BY-SA 3.0 */
    background: url('https://www.transparenttextures.com/patterns/carbon-fibre.png'), var(--color-bg-secondary);
}

.calculator-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    border: 1px solid var(--color-border);
    overflow: hidden;
    border-radius: var(--border-radius-lg);
}

@media (min-width: 992px) {
    .calculator-wrapper {
        grid-template-columns: 350px 1fr;
    }
}

.calc-sidebar {
    background: rgba(0,0,0,0.2);
    padding: var(--spacing-xl) var(--spacing-lg);
    border-right: 1px solid var(--color-border);
}

.calc-icon {
    width: 60px;
    height: 60px;
    background: var(--color-accent);
    color: var(--color-bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
}

.calc-sidebar h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.calc-form {
    padding: var(--spacing-xl) var(--spacing-lg);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 600px) {
    .form-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    font-size: 0.9rem;
    color: #FFF;
}

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

input[type="text"],
input[type="number"],
input[type="email"],
textarea,
select {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--border-radius-sm);
    color: #FFF;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-accent);
    background: rgba(255,255,255,0.1);
}

.input-wrap input {
    padding-right: 50px;
}

.input-suffix {
    position: absolute;
    right: 18px;
    color: var(--color-text-muted);
    font-weight: 600;
}

option { color: #000; }

.toggle {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
    flex-shrink: 0;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(255,255,255,0.1);
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--color-accent);
}

input:checked + .slider:before {
    transform: translateX(24px);
}

.slide-switch {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: rgba(255,255,255,0.03);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(255,255,255,0.05);
}

.switch-label strong {
    display: block;
    color: #FFF;
}

.switch-label span {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* Calc Results Panel */
.calc-result {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255,255,255,0.1);
    animation: fadeUp 0.5s ease;
}

.calc-label {
    text-transform: uppercase;
    font-size: 0.8rem;
    color: var(--color-accent);
    letter-spacing: 0.1em;
    font-weight: 700;
}

.calc-total {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: #FFF;
    margin-bottom: var(--spacing-md);
}

.calc-total span {
    color: var(--color-accent);
}

.calc-breakdown {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.calc-breakdown li {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed rgba(255,255,255,0.1);
    font-size: 0.95rem;
}

.calc-breakdown li:last-child {
    border: none;
}

.calc-breakdown strong {
    color: #FFF;
}

.calc-disclaimer {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xxl);
}

@media (min-width: 992px) {
    .contact-grid {
        grid-template-columns: 1fr 1.2fr;
    }
}

.contact-list {
    list-style: none;
    margin-top: var(--spacing-xl);
}

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

.c-icon {
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.05);
    border-radius: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    font-size: 1.2rem;
    border: 1px solid rgba(255,255,255,0.1);
}

.c-text span {
    display: block;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.c-text strong {
    font-size: 1.1rem;
    color: #FFF;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-icon {
    width: 45px;
    height: 45px;
    background: rgba(255,255,255,0.05);
    color: #FFF;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.social-icon:hover {
    background: var(--color-accent);
    color: #000;
    transform: translateY(-3px);
}

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

.contact-form-wrapper h3 {
    margin-bottom: var(--spacing-lg);
    font-size: 2rem;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

@media (min-width: 600px) {
    .form-row {
        flex-direction: row;
    }
    .flex-1 { flex: 1; }
}

.mb-md { margin-bottom: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.w-100 { width: 100%; }

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    color: #4ade80;
    padding: 15px;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(34, 197, 94, 0.2);
    margin-bottom: var(--spacing-md);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    padding: 15px;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(239, 68, 68, 0.2);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: fadeUp 0.3s ease;
}

.d-none { display: none !important; }

/* Footer */
.footer {
    background: #060910;
    padding-top: var(--spacing-xxl);
}

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

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }
}

.footer-links h4 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
}

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

.footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    display: block;
    margin-bottom: 10px;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent);
}

.border-top {
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    background: rgba(11, 15, 25, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    z-index: 1000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transform: translateY(150%);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .cookie-banner {
        left: unset;
        right: 30px;
        bottom: 30px;
        max-width: 450px;
    }
}

.cookie-text {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.cookie-text i {
    color: var(--color-accent);
    font-size: 1.5rem;
    margin-top: 2px;
}

.cookie-text p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    margin: 0;
    line-height: 1.5;
}

.cookie-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.cookie-actions .btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.py-lg {
    padding: var(--spacing-lg) 0;
}

/* ==========================================
   Mobile Responsiveness & Media Queries
   ========================================== */

@media (max-width: 991px) {
    section {
        padding: var(--spacing-xl) 0;
    }

    .hero-content {
        gap: var(--spacing-xl);
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .about-container {
        gap: var(--spacing-xl);
    }

    .contact-grid {
        gap: var(--spacing-xl);
    }
}

@media (max-width: 767px) {
    :root {
        --spacing-xxl: 4rem;
        --spacing-xl: 3rem;
    }

    /* Header & Mobile Navigation */
    .mobile-toggle {
        display: block;
        z-index: 1001;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--color-bg-primary);
        flex-direction: column;
        justify-content: center;
        padding: var(--spacing-xl);
        transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 1000;
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
        border-left: 1px solid var(--color-border);
    }

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

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-lg);
        width: 100%;
    }

    .nav-link {
        font-size: 1.5rem;
    }

    /* Hero Section */
    .hero {
        padding-top: 80px;
        text-align: center;
    }

    .hero-title {
        font-size: 2.8rem;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        max-width: 300px;
        margin: 0 auto;
    }

    /* About Section */
    .about-image {
        padding-right: 0;
        padding-bottom: 20px;
    }

    .about-badge {
        padding: 10px 15px;
    }

    /* Services Grid */
    .services-grid {
        grid-template-columns: 1fr;
    }

    /* Calculator */
    .calculator-wrapper {
        grid-template-columns: 1fr;
    }

    .calc-sidebar {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-lg);
        text-align: center;
    }

    .calc-icon {
        margin: 0 auto var(--spacing-md);
    }

    /* Contact Form */
    .contact-form-wrapper {
        padding: var(--spacing-lg);
    }

    .form-row {
        flex-direction: column;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .stat-num {
        font-size: 2.5rem;
    }

    .btn {
        width: 100%;
    }
}