/* ========================================
   X CLEANING - PREMIUM DESIGN SYSTEM
   Modern, Minimal, High-Converting
   ======================================== */

/* Root Variables - Premium Color Palette */
:root {
    /* Primary Colors */
    --primary: #1e40af;           /* Deep Blue - Trust & Professionalism */
    --primary-light: #3b82f6;     /* Light Blue */
    --primary-dark: #1e3a8a;      /* Dark Blue */
    
    /* Accent Color */
    --accent: #10b981;            /* Emerald Green - Freshness & Cleanliness */
    --accent-light: #6ee7b7;
    
    /* Neutrals */
    --white: #ffffff;
    --off-white: #f8fafc;
    --light-gray: #f1f5f9;
    --gray: #e2e8f0;
    --gray-dark: #64748b;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.1), 0 1px 2px 0 rgba(15, 23, 42, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.1), 0 2px 4px -1px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -2px rgba(15, 23, 42, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    color: var(--text-primary);
    background-color: var(--white);
    line-height: 1.6;
    font-size: 1rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.875rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.75;
}

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

a:hover {
    color: var(--primary-dark);
}

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

.container-sm {
    max-width: 800px;
}

.container-lg {
    max-width: 1400px;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    gap: 0.5rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Primary Button */
.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-dark);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

/* Secondary Button */
.btn-secondary {
    background-color: var(--light-gray);
    color: var(--text-primary);
    border: 1px solid var(--gray);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--gray);
    border-color: var(--gray-dark);
}

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

.btn-outline:hover:not(:disabled) {
    background-color: var(--primary);
    color: var(--white);
}

/* Accent Button */
.btn-accent {
    background-color: var(--accent);
    color: var(--white);
}

.btn-accent:hover:not(:disabled) {
    background-color: #059669;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* Size Variants */
.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* ========================================
   NAVIGATION
   ======================================== */

.navbar {
    background-color: var(--white);
    border-bottom: 1px solid var(--gray);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-xs);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-md);
    height: 70px;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
}

.navbar-brand a {
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-brand a:hover {
    color: var(--primary);
}

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

.navbar-logo-img {
    height: 70px;
    width: auto;
    display: block;
    transition: var(--transition);
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.navbar-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.navbar-menu a:hover {
    color: var(--primary);
}

.navbar-menu .btn {
    margin-left: var(--spacing-md);
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    padding: 6rem var(--spacing-md);
    background: linear-gradient(135deg, rgba(30, 64, 175, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

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

.hero-image {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

.hero-trust {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.hero-trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.trust-icon {
    font-size: 1.25rem;
}

/* ========================================
   SECTIONS
   ======================================== */

section {
    padding: var(--spacing-2xl) var(--spacing-md);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    margin-bottom: var(--spacing-md);
}

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

/* ========================================
   CARDS
   ======================================== */

.card {
    background-color: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--gray);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-header {
    margin-bottom: var(--spacing-md);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========================================
   GRID LAYOUTS
   ======================================== */

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ========================================
   FORMS
   ======================================== */

.form-group {
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

.form-label {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-input,
.form-select,
.form-textarea {
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
    background-color: var(--white);
    color: var(--text-primary);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

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

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-checkbox input {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background-color: var(--text-primary);
    color: var(--white);
    padding: var(--spacing-2xl) var(--spacing-md) var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
}

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

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

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    .navbar-menu {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero {
        padding: 4rem var(--spacing-md);
        min-height: auto;
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-ctas {
        flex-direction: column;
    }

    .hero-trust {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.875rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .navbar .container {
        height: 60px;
    }

    .navbar-brand {
        font-size: 1.25rem;
    }

    .hero {
        padding: 2rem var(--spacing-sm);
    }

    section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.9rem;
    }

    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

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

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

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

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

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

.hidden { display: none; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ========================================
   ANIMATIONS
   ======================================== */

.fade-in {
    animation: fadeInUp 0.6s ease-out;
}

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

/* ========================================
   NOTIFICATIONS
   ======================================== */

.notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 16px 24px;
    border-radius: 8px;
    font-weight: 500;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.notification.show {
    opacity: 1;
}

.notification-success {
    background-color: var(--success);
    color: white;
}

.notification-error {
    background-color: var(--error);
    color: white;
}

.notification-info {
    background-color: var(--primary);
    color: white;
}

@media (max-width: 768px) {
    .notification {
        bottom: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
}