/* ==========================================================================
   STREAMLINE EXTERIOR CLEANING - DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700;800;900&family=Source+Sans+Pro:ital,wght@0,300;0,400;0,600;0,700;1,400&display=swap');

:root {
    /* Color Tokens */
    --color-bg-primary: #121212;
    --color-bg-secondary: #1a1a1a;
    --color-card-bg: #222222;
    --color-card-hover: #2d2d2d;
    --color-accent-gold: #ffc107;
    --color-accent-gold-light: #ffce3a;
    --color-accent-gold-dark: #d39e00;
    --color-text-primary: #ffffff;
    --color-text-secondary: #b0b0b0;
    --color-text-muted: #757575;
    --color-border: #333333;
    --color-border-focus: #ffc107;
    --color-success: #28a745;
    
    /* Typography */
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Source Sans Pro', Arial, sans-serif;
    
    /* Layout & Spacing */
    --container-width: 1200px;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    
    /* Transition & Shadows */
    --transition-fast: all 0.2s ease;
    --transition-medium: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 8px 16px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 16px 32px rgba(0, 0, 0, 0.8);
    --glow-gold: 0 0 15px rgba(255, 193, 7, 0.3);
}

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

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
}

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

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

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

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-text-primary);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 900; }
h2 { font-size: clamp(2rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */

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

.section {
    padding: 100px 0;
    position: relative;
}

.section-alt {
    background-color: var(--color-bg-secondary);
}

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

.section-title {
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto 56px auto;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: rgba(255, 193, 7, 0.1);
    border: 1px solid var(--color-accent-gold);
    color: var(--color-accent-gold);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-radius: 50px;
    margin-bottom: 24px;
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(18, 18, 18, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-medium);
}

.header-scrolled {
    background-color: var(--color-bg-primary);
    box-shadow: var(--shadow-md);
    padding: 10px 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 48px;
    width: auto;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

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

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

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    letter-spacing: 0.5px;
    position: relative;
    padding: 8px 0;
}

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

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

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

.nav-cta-btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--color-accent-gold);
    color: var(--color-bg-primary) !important;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--glow-gold);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-cta-btn:hover {
    background-color: var(--color-accent-gold-light);
    transform: translateY(-2px);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 24px;
    position: relative;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--color-text-primary);
    position: absolute;
    transition: var(--transition-medium);
    border-radius: 2px;
}

.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 10px; }
.nav-toggle span:nth-child(3) { top: 20px; }

.nav-toggle.open span:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
    transform: translateY(-10px) rotate(-45deg);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 36px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-medium);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--color-accent-gold);
    color: var(--color-bg-primary);
    box-shadow: var(--glow-gold);
}

.btn-primary:hover {
    background-color: var(--color-accent-gold-light);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 193, 7, 0.4);
}

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

.btn-outline:hover {
    border-color: var(--color-accent-gold);
    color: var(--color-accent-gold);
    transform: translateY(-3px);
}

.btn-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

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

.hero {
    min-height: 90vh;
    padding-top: 140px;
    padding-bottom: 80px;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at 80% 20%, rgba(255, 193, 7, 0.08) 0%, transparent 60%),
                var(--color-bg-primary);
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: center;
}

.hero-title {
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-title span {
    background: linear-gradient(135deg, var(--color-accent-gold) 0%, var(--color-accent-gold-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    max-width: 600px;
}

.hero-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 40px;
}

.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
    font-weight: 600;
}

.hero-feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: rgba(255, 193, 7, 0.1);
    color: var(--color-accent-gold);
    font-size: 0.9rem;
    flex-shrink: 0;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-badge-group {
    position: absolute;
    bottom: 20px;
    left: 20px;
    background: rgba(26, 26, 26, 0.9);
    border: 1px solid var(--color-border);
    padding: 16px;
    border-radius: var(--border-radius-md);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-lg);
}

.hero-badge-num {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-accent-gold);
    line-height: 1;
}

.hero-badge-text {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
    line-height: 1.3;
}

/* ==========================================================================
   CARDS / GENERAL CONTAINERS
   ========================================================================== */

.card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 32px;
    transition: var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 193, 7, 0.3);
    box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   FORM CONTROLS
   ========================================================================== */

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

.form-label {
    display: block;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 8px;
    color: var(--color-text-primary);
}

.form-input {
    width: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    padding: 14px 16px;
    font-family: var(--font-body);
    font-size: 1rem;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-border-focus);
    background-color: rgba(0, 0, 0, 0.5);
    box-shadow: 0 0 0 1px var(--color-border-focus);
}

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

.footer {
    background-color: #0b0b0b;
    border-top: 1px solid var(--color-border);
    padding: 80px 0 40px 0;
    color: var(--color-text-secondary);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 48px;
    margin-bottom: 56px;
}

.footer-brand h4 {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.95rem;
    margin-bottom: 24px;
    line-height: 1.6;
}

.footer-title {
    font-size: 1.1rem;
    margin-bottom: 24px;
    position: relative;
    padding-bottom: 8px;
    color: var(--color-text-primary);
}

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

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-link {
    font-size: 0.95rem;
}

.footer-link:hover {
    color: var(--color-accent-gold);
    padding-left: 4px;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.95rem;
}

.footer-contact-item svg {
    color: var(--color-accent-gold);
    margin-top: 4px;
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 0.9rem;
}

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

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVENESS)
   ========================================================================== */

@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 56px;
        text-align: center;
    }
    
    .hero-description, .hero-features {
        margin-left: auto;
        margin-right: auto;
    }
    
    .btn-group {
        justify-content: center;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--color-bg-primary);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 40px;
        transition: var(--transition-medium);
        border-top: 1px solid var(--color-border);
    }
    
    .nav-menu.open {
        left: 0;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}