/* 
   =============================================
   Design System & Variables
   ============================================= 
*/
:root {
    /* Colors */
    --primary-color: #2563eb; /* Modern Blue */
    --primary-hover: #1d4ed8;
    --secondary-color: #111827; /* Dark Gray/Black for contrast */
    --secondary-hover: #1f2937;
    --text-main: #374151;
    --text-light: #6b7280;
    --bg-main: #ffffff;
    --bg-light: #f3f4f6;
    --bg-input: #f9fafb;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --whatsapp-color: #25d366;

    /* 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);

    /* Spacing & Border Radius */
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    --transition-speed: 0.3s;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    color: var(--secondary-color);
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.mt-2 {
    margin-top: 2rem;
}

/* 
   =============================================
   Buttons
   ============================================= 
*/
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

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

.btn-secondary {
    background-color: var(--secondary-color);
    color: #fff;
}

.btn-secondary:hover {
    background-color: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-block {
    display: block;
    width: 100%;
}

/* 
   =============================================
   Navigation
   ============================================= 
*/
.navbar {
    background-color: var(--bg-main);
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links {
    display: flex;
    gap: 24px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-main);
    transition: color var(--transition-speed) ease;
}

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

/* 
   =============================================
   Hero Section
   ============================================= 
*/
.hero {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, #f0fdf4 0%, #eff6ff 100%);
    border-bottom: 1px solid var(--border-color);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 24px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* 
   =============================================
   Sections Common
   ============================================= 
*/
.section {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

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

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-light);
}

/* 
   =============================================
   Features Grid
   ============================================= 
*/
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-main);
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

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

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 24px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-light);
}

/* 
   =============================================
   How It Works (Steps)
   ============================================= 
*/
.steps-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 2;
    padding: 0 20px;
}

.step-number {
    width: 48px;
    height: 48px;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 auto 20px auto;
}

.step h3 {
    margin-bottom: 12px;
    font-size: 1.25rem;
}

.step p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.step-connector {
    flex: 0.5;
    height: 2px;
    background-color: var(--border-color);
    margin-top: 24px;
}

/* 
   =============================================
   Forms
   ============================================= 
*/
.forms-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.form-wrapper {
    background-color: var(--bg-main);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.form-wrapper h2 {
    font-size: 1.75rem;
    margin-bottom: 8px;
}

.form-subtitle {
    color: var(--text-light);
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--secondary-color);
}

input[type="text"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    background-color: var(--bg-input);
    transition: border-color var(--transition-speed) ease;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: #fff;
}

.radio-group {
    display: flex;
    gap: 20px;
    padding: 8px 0;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 400;
    cursor: pointer;
}

.success-message {
    background-color: #ecfdf5;
    color: var(--success-color);
    padding: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    border: 1px solid #a7f3d0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.success-message i {
    font-size: 1.25rem;
}

.error-message {
    background-color: #fef2f2;
    color: #dc2626;
    padding: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    border: 1px solid #fca5a5;
    display: flex;
    align-items: center;
    gap: 12px;
}

.error-message i {
    font-size: 1.25rem;
}

.btn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
    transform: none !important;
}

/* 
   =============================================
   Footer
   ============================================= 
*/
footer {
    background-color: var(--secondary-color);
    color: #fff;
    padding: 60px 0 40px 0;
    text-align: center;
}

.footer-content .logo {
    justify-content: center;
    color: #fff;
    margin-bottom: 16px;
}

.footer-content p {
    color: #9ca3af;
    max-width: 400px;
    margin: 0 auto 24px auto;
}

.copyright {
    font-size: 0.875rem;
    border-top: 1px solid #374151;
    padding-top: 24px;
}

/* 
   =============================================
   Floating WhatsApp Button
   ============================================= 
*/
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: var(--whatsapp-color);
    color: #fff;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: transform var(--transition-speed) ease;
}

.whatsapp-float:hover {
    transform: scale(1.1);
}

/* 
   =============================================
   Responsive Design
   ============================================= 
*/
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.75rem;
    }
    
    .forms-container {
        grid-template-columns: 1fr;
    }
    
    .steps-container {
        flex-direction: column;
        align-items: center;
    }
    
    .step-connector {
        width: 2px;
        height: 40px;
        margin: 10px 0;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* simple hidden nav for mobile */
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}