/* ==========================================================================
   Maru Energy - Main Stylesheet
   Brand Colors:
   - Primary Dark: #1a3a3a (dark teal)
   - Primary: #2d5a5a (teal)
   - Accent: #4ecb71 (fresh green)
   - Light: #f8faf9 (off-white with green tint)
   - White: #ffffff
   ========================================================================== */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-primary-dark: #1a3a3a;
    --color-primary: #2d5a5a;
    --color-primary-light: #3d6b6b;
    --color-accent: #4ecb71;
    --color-accent-dark: #3db85e;
    --color-accent-light: #7dd99a;
    --color-light: #f8faf9;
    --color-white: #ffffff;
    --color-text: #2a2a2a;
    --color-text-muted: #5a6a6a;
    --color-border: #d8e0de;
    
    /* Typography */
    --font-display: 'Fraunces', Georgia, serif;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(26, 58, 58, 0.05);
    --shadow-md: 0 4px 12px rgba(26, 58, 58, 0.08);
    --shadow-lg: 0 8px 24px rgba(26, 58, 58, 0.12);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
}

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

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

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
}

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

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    margin: 0 0 var(--space-md);
    color: var(--color-primary-dark);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }

p {
    margin: 0 0 var(--space-md);
}

ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

address {
    font-style: normal;
}

/* Utility Classes */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-primary-dark);
    border-color: var(--color-accent);
}

.btn-primary:hover {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: var(--color-white);
}

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

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

.btn-ghost {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

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

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

.btn-full {
    width: 100%;
}

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

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-primary-dark);
    text-decoration: none;
}

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

.logo-mark {
    flex-shrink: 0;
    color: var(--color-accent);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-family: var(--font-body);
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--color-primary-dark);
}

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

.logo-tagline {
    font-size: 0.6875rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    color: var(--color-text-muted);
    text-transform: lowercase;
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    padding: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle-bar {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary-dark);
    border-radius: 1px;
    transition: all var(--transition-base);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    padding: var(--space-lg);
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    gap: var(--space-sm);
}

.nav-menu.is-open {
    display: flex;
}

.nav-menu a {
    display: block;
    padding: var(--space-sm) 0;
    color: var(--color-primary-dark);
    font-weight: 500;
}

.nav-menu a:hover {
    color: var(--color-accent-dark);
}

.nav-menu .btn {
    margin-top: var(--space-sm);
}

/* Desktop Navigation */
@media (min-width: 900px) {
    .nav-toggle {
        display: none;
    }
    
    .nav-menu {
        display: flex;
        position: static;
        flex-direction: row;
        align-items: center;
        gap: var(--space-lg);
        padding: 0;
        box-shadow: none;
        background: transparent;
    }
    
    .nav-menu a {
        padding: var(--space-sm);
        font-size: 0.9375rem;
    }
    
    .nav-menu .btn {
        margin-top: 0;
        margin-left: var(--space-sm);
    }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-image {
    position: absolute;
    inset: 0;
    background-image: url('../images/hero-bush.jpg');
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to right,
        rgba(26, 58, 58, 0.92) 0%,
        rgba(26, 58, 58, 0.75) 50%,
        rgba(26, 58, 58, 0.4) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 640px;
    padding: var(--space-3xl) 0;
}

.hero-greeting {
    display: block;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.hero-title {
    color: var(--color-white);
    margin-bottom: var(--space-lg);
}

.hero-lead {
    font-size: 1.125rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-xl);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.hero-scroll-hint {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-8px); }
    60% { transform: translateX(-50%) translateY(-4px); }
}

/* ==========================================================================
   Content Sections
   ========================================================================== */
.content-section {
    padding: var(--space-4xl) 0;
}

.content-section--alt {
    background-color: var(--color-light);
}

.section-grid {
    display: grid;
    gap: var(--space-2xl);
    align-items: center;
}

@media (min-width: 768px) {
    .section-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-3xl);
    }
    
    .section-grid--reverse .section-image {
        order: 2;
    }
}

.section-image {
    position: relative;
}

.section-image img {
    width: 100%;
    height: auto;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.image-placeholder {
    aspect-ratio: 4/3;
    background-color: var(--color-primary);
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
    text-align: center;
}

.image-placeholder span {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    font-style: italic;
}

.section-content {
    max-width: 520px;
}

.section-label {
    display: inline-block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-accent-dark);
    margin-bottom: var(--space-sm);
}

.section-label--light {
    color: var(--color-accent);
}

.section-content h2 {
    margin-bottom: var(--space-lg);
}

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

.feature-list {
    margin: var(--space-lg) 0;
    padding-left: var(--space-lg);
}

.feature-list li {
    position: relative;
    padding: var(--space-xs) 0;
    padding-left: var(--space-lg);
    color: var(--color-text);
}

.feature-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.75em;
    width: 8px;
    height: 8px;
    background-color: var(--color-accent);
    border-radius: 50%;
}

/* ==========================================================================
   Vision Section
   ========================================================================== */
.vision-section {
    padding: var(--space-4xl) 0;
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

.vision-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.vision-content h2 {
    color: var(--color-white);
    margin-bottom: var(--space-xl);
}

.vision-text {
    text-align: left;
    margin-bottom: var(--space-3xl);
}

.vision-lead {
    font-size: 1.25rem;
    line-height: 1.7;
    color: var(--color-accent-light);
    margin-bottom: var(--space-xl);
}

.vision-text p {
    color: rgba(255, 255, 255, 0.8);
}

.vision-values {
    display: grid;
    gap: var(--space-lg);
    text-align: center;
}

@media (min-width: 600px) {
    .vision-values {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 900px) {
    .vision-values {
        grid-template-columns: repeat(4, 1fr);
    }
}

.value-card {
    padding: var(--space-lg);
}

.value-icon {
    margin-bottom: var(--space-md);
    color: var(--color-accent);
}

.value-card h3 {
    font-size: 1rem;
    color: var(--color-white);
    margin-bottom: var(--space-sm);
}

.value-card p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-section {
    padding: var(--space-4xl) 0;
    background-color: var(--color-light);
}

.contact-grid {
    display: grid;
    gap: var(--space-3xl);
}

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

.contact-intro h2 {
    margin-bottom: var(--space-lg);
}

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

.contact-details {
    margin-top: var(--space-xl);
}

.contact-item {
    margin-bottom: var(--space-lg);
}

.contact-item strong {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.contact-item a,
.contact-item address {
    color: var(--color-primary-dark);
    font-size: 1rem;
}

/* Contact Form */
.contact-form-wrap {
    background-color: var(--color-white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(78, 203, 113, 0.15);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-note {
    margin-top: var(--space-md);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
    display: grid;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

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

.footer-brand .logo {
    margin-bottom: var(--space-md);
}

.footer-brand .logo-mark {
    color: var(--color-accent);
}

.footer-brand .logo-name {
    color: var(--color-white);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
}

.footer-nav {
    display: grid;
    gap: var(--space-xl);
}

@media (min-width: 480px) {
    .footer-nav {
        grid-template-columns: repeat(2, 1fr);
    }
}

.footer-nav-group h4 {
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.footer-nav-group ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-nav-group a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9375rem;
}

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

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--space-sm);
}

.footer-acknowledgement {
    font-style: italic;
}

/* ==========================================================================
   Animations & Enhancements
   ========================================================================== */

/* Fade in on scroll - applied via JS */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Smooth section transitions */
section {
    scroll-margin-top: 72px;
}

/* Print styles */
@media print {
    .site-header,
    .hero-scroll-hint,
    .btn {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-xl) 0;
    }
    
    .hero-overlay {
        background: var(--color-primary-dark);
    }
}