/* ===================================
   CSS Variables & Root Styles
=================================== */
:root {
    /* Primary Colors - Based on logo colors (using a professional blue-green theme) */
    --primary-color: #0d6e6e;
    --primary-light: #14968c;
    --primary-dark: #094949;
    --secondary-color: #ff6b35;
    --accent-color: #ffc107;

    /* Neutral Colors */
    --white: #ffffff;
    --off-white: #f8f9fa;
    --light-gray: #e9ecef;
    --medium-gray: #adb5bd;
    --dark-gray: #495057;
    --black: #212529;

    /* Gradient Colors */
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, #ff8f5a 100%);

    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.15);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50%;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    --white: #1a1a2e;
    --off-white: #16213e;
    --light-gray: #2d3748;
    --medium-gray: #718096;
    --dark-gray: #a0aec0;
    --black: #f7fafc;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.6);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-gray);
    overflow-x: hidden;
    background-color: var(--white);
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ===================================
   Container & Layout
=================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

.section {
    padding: var(--section-padding);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 16px;
    line-height: 1.2;
    transition: color var(--transition-normal);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--medium-gray);
    max-width: 600px;
    margin: 0 auto;
}

.section-description {
    font-size: 1rem;
    color: var(--medium-gray);
    max-width: 700px;
    margin: 20px auto 0;
    line-height: 1.7;
}

.content-flex {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    align-items: flex-start;
    margin-bottom: 50px;
}

.content-flex-item {
    flex: 1;
    min-width: 300px;
}

@media (max-width: 768px) {
    .content-flex-item {
        min-width: 100%;
    }
    
    .content-flex {
        gap: 30px;
    }
}

.feature-link {
    display: inline-block;
    margin-top: 12px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    transition: var(--transition-fast);
}

.feature-link:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

.trust-list {
    margin-top: 12px;
    padding-left: 0;
    list-style: none;
}

.trust-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    font-size: 0.875rem;
    color: var(--medium-gray);
}

.trust-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

.benefits-intro {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    font-size: 1.125rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ===================================
   Typography
=================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--black);
    transition: color var(--transition-normal);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

/* ===================================
   Buttons
=================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    text-transform: capitalize;
}

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

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

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    transition: var(--transition-normal);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* ===================================
   Theme Toggle Button
=================================== */
.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--light-gray);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    position: relative;
}

.theme-toggle:hover {
    background: var(--primary-color);
}

.theme-toggle:hover svg {
    stroke: var(--white);
}

.theme-toggle svg {
    stroke: var(--dark-gray);
    transition: var(--transition-fast);
}

.theme-toggle .moon-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

/* Logo Dark Mode Switching */
.logo-dark {
    display: none;
}

[data-theme="dark"] .logo-light {
    display: none;
}

[data-theme="dark"] .logo-dark {
    display: block;
}

/* ===================================
   Header Styles
=================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal), background-color var(--transition-normal);
}

.header.hidden {
    transform: translateY(-100%);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.logo img {
    height: 65px;
    width: auto;
    max-width: 220px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
    transition: var(--transition-normal);
}

.logo {
    display: flex;
    align-items: center;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 0;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.938rem;
    font-weight: 500;
    color: var(--dark-gray);
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-fast);
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-cta {
    padding: 10px 24px;
    font-size: 0.875rem;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger-line {
    width: 28px;
    height: 3px;
    background: var(--black);
    border-radius: 3px;
    transition: var(--transition-fast);
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ===================================
   Mobile Menu
=================================== */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -320px;
    width: 320px;
    max-width: 85%;
    height: 100%;
    background: var(--white);
    z-index: 999;
    transition: right var(--transition-normal);
    overflow-y: auto;
}

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

.mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-bottom: 1px solid var(--light-gray);
}

.mobile-logo img {
    height: 55px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
}

.mobile-menu-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--dark-gray);
    padding: 8px;
}

.mobile-nav-menu {
    padding: 24px 20px;
}

.mobile-nav-link {
    display: block;
    padding: 14px 0;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--dark-gray);
    border-bottom: 1px solid var(--light-gray);
    transition: var(--transition-fast);
}

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

.mobile-cta {
    display: block;
    margin-top: 24px;
    text-align: center;
}

.mobile-theme-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 14px 0;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--dark-gray);
    font-family: 'Poppins', sans-serif;
    border-bottom: 1px solid var(--light-gray);
}

.mobile-theme-toggle svg {
    stroke: var(--dark-gray);
}

.mobile-theme-toggle .moon-icon {
    display: none;
}

[data-theme="dark"] .mobile-theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .mobile-theme-toggle .moon-icon {
    display: block;
}

/* ===================================
   Hero Section
=================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--off-white) 0%, var(--white) 50%, var(--off-white) 100%);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
    transition: background-color var(--transition-normal);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 150%;
    background: radial-gradient(circle, rgba(20, 150, 140, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(20, 150, 140, 0.1);
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 24px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 16px;
    color: var(--black);
}

.hero-title span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--medium-gray);
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
    z-index: 1;
}

.hero-image-wrapper {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 40px;
    overflow: hidden;
    transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.hero-image-wrapper::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--primary-light), transparent);
    border-radius: 50%;
    opacity: 0.3;
}

/* ===================================
   Features Section
=================================== */
.features {
    background: var(--white);
    transition: background-color var(--transition-normal);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, rgba(20, 150, 140, 0.1) 0%, rgba(20, 150, 140, 0.05) 100%);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    stroke: var(--primary-color);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-text {
    font-size: 0.938rem;
    color: var(--medium-gray);
    line-height: 1.6;
}

/* ===================================
   Services Section
=================================== */
.services {
    background: var(--off-white);
    transition: background-color var(--transition-normal);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border: 1px solid var(--light-gray);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.service-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon svg {
    width: 35px;
    height: 35px;
    stroke: var(--white);
}

.service-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.service-text {
    font-size: 0.875rem;
    color: var(--medium-gray);
}

/* ===================================
   Calculator Section
=================================== */
.calculator {
    background: var(--white);
    transition: background-color var(--transition-normal);
}

.calculator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.calculator-content {
    position: relative;
    z-index: 1;
}

.calculator-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 32px;
}

.calculator-feature {
    display: flex;
    align-items: center;
    gap: 16px;
}

.calculator-feature-icon {
    width: 50px;
    height: 50px;
    background: rgba(20, 150, 140, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.calculator-feature-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary-color);
}

.calculator-box {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 48px;
    border: 1px solid var(--light-gray);
    transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.calculator-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.calculator-subtitle {
    font-size: 0.938rem;
    color: var(--medium-gray);
    margin-bottom: 32px;
}

.calculator-input-group {
    margin-bottom: 24px;
}

.calculator-input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 8px;
}

.calculator-input-wrapper {
    position: relative;
}

.calculator-input-wrapper span {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark-gray);
}

.calculator-input {
    width: 100%;
    padding: 16px 16px 16px 48px;
    font-size: 1.25rem;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    background: var(--white);
    color: var(--black);
}

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

.calculator-result {
    background: var(--off-white);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-top: 24px;
}

.calculator-result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--light-gray);
}

.calculator-result-row:last-child {
    border-bottom: none;
    padding-top: 16px;
}

.calculator-result-label {
    font-size: 0.938rem;
    color: var(--medium-gray);
}

.calculator-result-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* ===================================
   Benefits Section
=================================== */
.benefits {
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.benefits::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 60%;
    height: 150%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.benefits-content {
    position: relative;
    z-index: 1;
}

.benefits .section-title,
.benefits .section-subtitle {
    color: var(--white);
}

.benefits .section-subtitle {
    opacity: 0.8;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.benefit-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-normal);
}

.benefit-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-4px);
}

.benefit-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.benefit-icon svg {
    width: 30px;
    height: 30px;
    stroke: var(--white);
}

.benefit-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 12px;
}

.benefit-text {
    font-size: 0.938rem;
    color: rgba(255, 255, 255, 0.8);
}

/* ===================================
   Page Header Section
=================================== */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    padding: 160px 0 100px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 150%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.page-header-content {
    position: relative;
    z-index: 1;
}

.page-header-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}

.page-header-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 24px;
}

.breadcrumb a,
.breadcrumb span {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.938rem;
}

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

/* ===================================
   Content Sections
=================================== */
.content-section {
    padding: var(--section-padding);
}

.content-block {
    margin-bottom: 60px;
}

.content-block:last-child {
    margin-bottom: 0;
}

.content-block h2 {
    font-size: 2rem;
    margin-bottom: 24px;
    position: relative;
    padding-left: 24px;
}

.content-block h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 4px;
    height: 30px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.content-block h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.content-block p {
    font-size: 1rem;
    color: var(--dark-gray);
    line-height: 1.8;
}

.content-block ul {
    margin-top: 20px;
    padding-left: 24px;
}

.content-block ul li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 12px;
    font-size: 1rem;
    color: var(--dark-gray);
}

.content-block ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
}

/* ===================================
   FAQ Section
=================================== */
.faq-section {
    background: var(--off-white);
    transition: background-color var(--transition-normal);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: background-color var(--transition-normal);
}

.faq-question {
    width: 100%;
    padding: 24px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.063rem;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    color: var(--black);
    text-align: left;
    transition: var(--transition-fast);
}

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

.faq-icon {
    width: 24px;
    height: 24px;
    position: relative;
    flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 14px;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition-fast);
}

.faq-icon::before {
    transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item.active .faq-icon::before {
    transform: translate(-50%, -50%) rotate(0deg);
}

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

.faq-answer-content {
    padding: 0 32px 24px;
    font-size: 0.938rem;
    color: var(--medium-gray);
    line-height: 1.7;
}

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

/* ===================================
   Contact Section
=================================== */
.contact-section {
    background: var(--white);
    transition: background-color var(--transition-normal);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    padding: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    color: var(--white);
}

.contact-info-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 24px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-item-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--white);
}

.contact-item-text h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--white);
}

.contact-item-text p {
    font-size: 0.938rem;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.contact-form {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 48px;
    box-shadow: var(--shadow-lg);
    transition: background-color var(--transition-normal);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    background: var(--white);
    color: var(--black);
}

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

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* ===================================
   Footer
=================================== */
.footer {
    background: #1a1a2e; /* Fixed dark background */
    color: var(--white);
    padding: 80px 0 0;
    position: relative;
}

/* Dark mode footer text visibility fix */
[data-theme="dark"] .footer,
[data-theme="dark"] .footer-about-text,
[data-theme="dark"] .footer-links a,
[data-theme="dark"] .footer-contact-item span,
[data-theme="dark"] .footer-title,
[data-theme="dark"] .footer-bottom p {
    color: #f7fafc;
}

[data-theme="dark"] .footer-about-text {
    color: rgba(255, 255, 255, 0.85);
}

[data-theme="dark"] .footer-links a {
    color: rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .footer-contact-item span {
    color: rgba(255, 255, 255, 0.85);
}

[data-theme="dark"] .social-link {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .footer-contact-icon {
    background: rgba(20, 150, 140, 0.25);
}

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

.footer-content {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: inline-block;
    margin-bottom: 20px;
}

.footer-logo img {
    height: 75px;
    width: auto;
    max-width: 250px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.footer-about {
    padding-right: 20px;
}

.footer-about-text {
    font-size: 0.938rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 24px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.social-link {
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

.social-link svg {
    fill: var(--white);
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--white);
    position: relative;
    padding-bottom: 12px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--primary-light);
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.938rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-light);
    padding-left: 5px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 18px;
}

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

.footer-contact-icon {
    width: 40px;
    height: 40px;
    background: rgba(20, 150, 140, 0.15);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.footer-contact-icon svg {
    stroke: var(--primary-light);
}

.footer-contact-item span {
    font-size: 0.938rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.5;
    padding-top: 8px;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

/* ===================================
   Floating Buttons
=================================== */
.floating-buttons {
    position: fixed;
    right: 24px;
    bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    z-index: 900;
}

.floating-btn {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-normal);
    border: none;
    box-shadow: var(--shadow-lg);
}

.go-top-btn {
    background: var(--gradient-primary);
    color: var(--white);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.go-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.go-top-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.message-btn {
    background: var(--gradient-secondary);
    color: var(--white);
}

.message-btn:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

/* ===================================
   Responsive Design
=================================== */

/* Large Desktop */
@media (max-width: 1200px) {
    .container {
        max-width: 95%;
    }

    .hero-title {
        font-size: 3rem;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablet - Landscape */
@media (max-width: 992px) {
    .nav-menu {
        display: none;
    }

    .nav-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-text {
        order: 2;
    }

    .hero-image {
        order: 1;
    }

    .hero-title {
        font-size: 2.5rem;
    }

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

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .calculator-container {
        grid-template-columns: 1fr;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

/* Tablet - Portrait */
@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero {
        padding-top: 100px;
        min-height: auto;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .footer-about {
        grid-column: span 2;
    }

    .page-header {
        padding: 120px 0 80px;
    }

    .page-header-title {
        font-size: 2rem;
    }

    .calculator-box {
        padding: 32px 24px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

/* Mobile */
@media (max-width: 576px) {
    :root {
        --section-padding: 50px 0;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .hero {
        padding-top: 90px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-badge {
        font-size: 0.75rem;
        padding: 6px 12px;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        padding: 14px 24px;
    }

    .feature-card {
        padding: 32px 24px;
    }

    .benefit-card {
        padding: 24px;
    }

    .faq-question {
        padding: 20px 24px;
        font-size: 0.938rem;
    }

    .faq-answer-content {
        padding: 0 24px 20px;
    }

    .contact-info,
    .contact-form {
        padding: 32px 24px;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-about {
        grid-column: auto;
    }

    .floating-buttons {
        right: 16px;
        bottom: 16px;
    }

    .floating-btn {
        width: 48px;
        height: 48px;
    }
}

/* Small Mobile */
@media (max-width: 375px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .logo img {
        height: 45px;
    }

    .mobile-menu {
        width: 280px;
    }
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fadeIn {
    animation: fadeIn 0.6s ease forwards;
}

/* ===================================
   Utility Classes
=================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 40px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 40px; }

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}