/* ===================================
   Connor Merk Lawn Care — Design System
   =================================== */

/* --- CSS Custom Properties --- */
:root {
    /* Colors */
    --color-primary: #2D5016;
    --color-primary-light: #4A7C2E;
    --color-accent: #D4A843;
    --color-bg: #FAFAF8;
    --color-surface: #F2F0ED;
    --color-text: #1A1A1A;
    --color-text-secondary: #4A4A4A;
    --color-border: #E0DDD8;
    --color-success: #2E7D32;
    --color-error: #C62828;
    --color-white: #FFFFFF;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.25rem;
    --line-height-body: 1.6;
    --line-height-heading: 1.2;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 1rem;
    --space-4: 1.5rem;
    --space-5: 2rem;
    --space-6: 3rem;
    --space-7: 4rem;
    --space-8: 5rem;

    /* Layout */
    --container-max: 1080px;
    --section-padding: 5rem;
    --border-radius: 8px;
    --border-radius-sm: 6px;
    --border-radius-lg: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-body);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* --- Typography --- */
h1, h2, h3 {
    line-height: var(--line-height-heading);
    font-weight: 700;
    color: var(--color-text);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-xl); }

p {
    color: var(--color-text-secondary);
    max-width: 65ch;
}

/* --- Layout --- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-6);
}

/* --- Header --- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(250, 250, 248, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3) 0;
}

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

.logo {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.nav a {
    text-decoration: none;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.nav-cta {
    background: var(--color-primary);
    color: var(--color-white) !important;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--border-radius-lg);
    transition: background 0.2s ease !important;
}

.nav-cta:hover {
    background: var(--color-primary-light) !important;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-family);
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border-radius: var(--border-radius-lg);
}

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

.btn-primary:hover {
    background: var(--color-primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-lg {
    font-size: var(--font-size-lg);
    padding: var(--space-3) var(--space-5);
}

.btn-full {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* --- Hero --- */
.hero {
    padding: calc(var(--section-padding) + 4rem) 0 var(--section-padding);
    background: linear-gradient(135deg, #f0f7ec 0%, var(--color-bg) 60%);
    text-align: center;
}

.hero-content {
    max-width: 720px;
    margin: 0 auto;
}

.hero h1 {
    margin-bottom: var(--space-4);
}

.hero-sub {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-5);
    color: var(--color-text-secondary);
}

/* --- Services --- */
.services {
    padding: var(--section-padding) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}

.service-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--space-5);
    text-align: center;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.service-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.service-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #f0f7ec;
    color: var(--color-primary);
    margin-bottom: var(--space-3);
}

.service-card h3 {
    margin-bottom: var(--space-2);
}

.service-card p {
    font-size: var(--font-size-sm);
    margin: 0 auto;
}

/* --- Trust --- */
.trust {
    padding: var(--section-padding) 0;
    background: var(--color-surface);
}

.trust-content {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
}

.trust-content p {
    margin: 0 auto var(--space-3);
    font-size: var(--font-size-lg);
}

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

/* --- How It Works --- */
.how-it-works {
    padding: var(--section-padding) 0;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
}

.step {
    text-align: center;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    font-weight: 700;
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-3);
}

.step h3 {
    margin-bottom: var(--space-2);
}

.step p {
    font-size: var(--font-size-sm);
    margin: 0 auto;
}

/* --- Quote Section --- */
.quote-section {
    padding: var(--section-padding) 0;
    background: var(--color-surface);
}

.quote-wrapper {
    max-width: 640px;
    margin: 0 auto;
}

.quote-header {
    text-align: center;
    margin-bottom: var(--space-5);
}

.quote-header p {
    margin: 0 auto;
    color: var(--color-text-secondary);
}

/* --- Form --- */
.form-group {
    margin-bottom: var(--space-4);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-2);
    color: var(--color-text);
}

.required {
    color: var(--color-error);
}

input[type="text"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    appearance: none;
    -webkit-appearance: none;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(74, 124, 46, 0.12);
}

input.invalid,
select.invalid,
textarea.invalid {
    border-color: var(--color-error);
}

input.invalid:focus,
select.invalid:focus,
textarea.invalid:focus {
    box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.1);
}

select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%234A4A4A' d='M6 8.825L1.175 4 2.238 2.938 6 6.7 9.763 2.937 10.825 4z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

textarea {
    resize: vertical;
    min-height: 80px;
}

.error-msg {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: var(--space-1);
    min-height: 1.25rem;
}

/* --- Form States --- */
.form-success {
    text-align: center;
    padding: var(--space-6) 0;
}

.success-icon {
    color: var(--color-success);
    margin-bottom: var(--space-3);
}

.form-success h3 {
    margin-bottom: var(--space-2);
    color: var(--color-success);
}

.form-success p {
    margin: 0 auto;
}

.form-error {
    text-align: center;
    padding: var(--space-4);
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--border-radius);
    margin-top: var(--space-4);
}

.form-error p {
    color: var(--color-error);
    margin: 0 auto;
}

/* --- Footer --- */
.site-footer {
    padding: var(--space-5) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.site-footer p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0 auto;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    :root {
        --section-padding: 4rem;
    }

    h1 { font-size: var(--font-size-4xl); }
}

@media (max-width: 768px) {
    .services-grid,
    .steps-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .nav a:not(.nav-cta) {
        display: none;
    }

    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }

    .hero-sub {
        font-size: var(--font-size-base);
    }
}

@media (max-width: 480px) {
    :root {
        --section-padding: 3rem;
    }

    .container {
        padding: 0 var(--space-3);
    }
}

/* --- Animations --- */
@media (prefers-reduced-motion: no-preference) {
    .service-card,
    .step,
    .trust-content {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity 0.5s ease, transform 0.5s ease;
    }

    .service-card.visible,
    .step.visible,
    .trust-content.visible {
        opacity: 1;
        transform: translateY(0);
    }
}