/* =========================================
   Wheel Be Fine - Mobile Mechanic DFW
   styles.css - Mobile-First Responsive Design
   ========================================= */

/* -----------------------------------------
   CSS Custom Properties (Variables)
   ----------------------------------------- */
:root {
    /* Colors */
    --color-primary: #1a56db;
    --color-primary-dark: #1e40af;
    --color-primary-light: #3b82f6;
    --color-secondary: #0f172a;
    --color-accent: #f59e0b;
    --color-success: #10b981;
    --color-error: #ef4444;
    --color-warning: #f59e0b;
    
    /* Neutrals */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* 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;
    
    /* Layout */
    --container-max: 1200px;
    --header-height: 70px;
    
    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* Focus States for Accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-sm) var(--space-md);
    z-index: 1000;
    transition: top var(--transition);
}

.skip-link:focus {
    top: 0;
}

/* -----------------------------------------
   Layout Utilities
   ----------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-xl);
    }
}

/* -----------------------------------------
   Header & Navigation
   ----------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-white);
    box-shadow: var(--shadow);
    z-index: 100;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--color-secondary);
}

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

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Mobile Navigation Toggle */
.nav__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 101;
}

.hamburger {
    position: relative;
    width: 24px;
    height: 2px;
    background: var(--color-gray-700);
    transition: background var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-gray-700);
    transition: transform var(--transition);
}

.hamburger::before { top: -7px; }
.hamburger::after { bottom: -7px; }

/* Hamburger Active State */
.nav__toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.nav__toggle[aria-expanded="true"] .hamburger::before {
    transform: translateY(7px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .hamburger::after {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.nav__menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    padding: var(--space-lg);
    list-style: none;
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s;
}

.nav__menu.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.nav__item {
    margin-bottom: var(--space-sm);
}

.nav__link {
    display: block;
    padding: var(--space-sm) 0;
    font-weight: 500;
    color: var(--color-gray-700);
    transition: color var(--transition);
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-primary);
}

.nav__link--cta {
    display: inline-block;
    margin-top: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-primary);
    color: var(--color-white) !important;
    border-radius: var(--radius);
    text-align: center;
}

.nav__link--cta:hover {
    background: var(--color-primary-dark);
}

/* Desktop Navigation */
@media (min-width: 768px) {
    .nav__toggle {
        display: none;
    }

    .nav__menu {
        position: static;
        display: flex;
        align-items: center;
        gap: var(--space-xl);
        padding: 0;
        background: transparent;
        box-shadow: none;
        transform: none;
        opacity: 1;
        visibility: visible;
    }

    .nav__item {
        margin-bottom: 0;
    }

    .nav__link--cta {
        margin-top: 0;
    }
}

/* -----------------------------------------
   Buttons
   ----------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    border: 2px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}

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

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

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

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

.btn--full {
    width: 100%;
}

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

.btn__icon {
    font-size: 1.1em;
}

/* -----------------------------------------
   Hero Section
   ----------------------------------------- */
.hero {
    padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
    background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-white) 100%);
    text-align: center;
}

.hero__content {
    max-width: 800px;
}

.hero__title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-secondary);
    line-height: 1.2;
    margin-bottom: var(--space-lg);
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--space-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero__cta {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.hero__trust {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
}

.trust-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: 9999px;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

@media (min-width: 640px) {
    .hero {
        padding: calc(var(--header-height) + var(--space-4xl)) 0 var(--space-4xl);
    }

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

    .hero__cta {
        flex-direction: row;
        justify-content: center;
    }
}

@media (min-width: 1024px) {
    .hero__title {
        font-size: var(--font-size-5xl);
    }
}

/* -----------------------------------------
   Section Headers
   ----------------------------------------- */
.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.section__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-500);
}

@media (min-width: 768px) {
    .section__title {
        font-size: var(--font-size-3xl);
    }
}

/* -----------------------------------------
   Services Section
   ----------------------------------------- */
.services {
    padding: var(--space-3xl) 0;
    background: var(--color-white);
}

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

.service-card {
    padding: var(--space-xl);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

.service-card:hover {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-card__icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.service-card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

.service-card__desc {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    line-height: 1.7;
}

@media (min-width: 640px) {
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* -----------------------------------------
   Coverage Section
   ----------------------------------------- */
.coverage {
    padding: var(--space-3xl) 0;
    background: var(--color-gray-50);
}

.coverage__cities {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.city-badge {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-white);
    border: 2px solid var(--color-primary-light);
    border-radius: var(--radius);
    font-weight: 600;
    color: var(--color-primary-dark);
    transition: all var(--transition);
}

.city-badge:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.05);
}

.city-badge__icon {
    font-size: 1.2em;
}

.coverage__note {
    text-align: center;
    color: var(--color-gray-500);
}

.coverage__note a {
    font-weight: 600;
}

/* -----------------------------------------
   FAQ Section
   ----------------------------------------- */
.faq {
    padding: var(--space-3xl) 0;
    background: var(--color-white);
}

.faq__accordion {
    max-width: 800px;
    margin: 0 auto;
}

.faq__item {
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius);
    margin-bottom: var(--space-md);
    overflow: hidden;
}

.faq__item[open] {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow);
}

.faq__question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    font-weight: 600;
    color: var(--color-secondary);
    cursor: pointer;
    list-style: none;
    transition: background var(--transition);
}

.faq__question::-webkit-details-marker {
    display: none;
}

.faq__question:hover {
    background: var(--color-gray-50);
}

.faq__icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    margin-left: var(--space-md);
    position: relative;
}

.faq__icon::before,
.faq__icon::after {
    content: '';
    position: absolute;
    background: var(--color-gray-400);
    transition: transform var(--transition);
}

.faq__icon::before {
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    transform: translateY(-50%);
}

.faq__icon::after {
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;
    transform: translateX(-50%);
}

.faq__item[open] .faq__icon::after {
    transform: translateX(-50%) rotate(90deg);
}

.faq__answer {
    padding: 0 var(--space-lg) var(--space-lg);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* -----------------------------------------
   Contact Section
   ----------------------------------------- */
.contact {
    padding: var(--space-3xl) 0;
    background: var(--color-gray-50);
}

.contact__grid {
    display: grid;
    gap: var(--space-2xl);
}

.contact__card {
    padding: var(--space-xl);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.contact__card-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: var(--space-lg);
}

.contact__detail {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.contact__detail:last-child {
    margin-bottom: 0;
}

.contact__icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact__detail strong {
    display: block;
    color: var(--color-secondary);
    margin-bottom: var(--space-xs);
}

.contact__link {
    font-weight: 500;
}

.contact__hours {
    color: var(--color-gray-600);
    margin: 0;
}

@media (min-width: 768px) {
    .contact__grid {
        grid-template-columns: 1fr 1.5fr;
        align-items: start;
    }
}

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

/* Honeypot (hidden from users) */
.form__honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    overflow: hidden;
}

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

.form__label {
    display: block;
    font-weight: 500;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
}

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

.form__input {
    width: 100%;
    padding: var(--space-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form__input:hover {
    border-color: var(--color-gray-300);
}

.form__input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
    outline: none;
}

.form__input.is-invalid {
    border-color: var(--color-error);
}

.form__input.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form__select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-right: var(--space-3xl);
}

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

.form__error {
    display: block;
    margin-top: var(--space-xs);
    font-size: var(--font-size-sm);
    color: var(--color-error);
}

/* Form Messages */
.form__message {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-radius: var(--radius);
    margin-top: var(--space-lg);
}

.form__message--success {
    background: #ecfdf5;
    border: 1px solid var(--color-success);
    color: #065f46;
}

.form__message--error {
    background: #fef2f2;
    border: 1px solid var(--color-error);
    color: #991b1b;
}

.message__icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
}

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

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

.form__message p {
    margin-top: var(--space-xs);
}

/* -----------------------------------------
   Footer
   ----------------------------------------- */
.footer {
    padding: var(--space-2xl) 0;
    background: var(--color-secondary);
    color: var(--color-gray-400);
    text-align: center;
}

.footer__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--color-white);
}

.footer__tagline {
    color: var(--color-gray-400);
}

.footer__copy {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* -----------------------------------------
   Animations
   ----------------------------------------- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form__message {
    animation: fadeIn 0.3s ease;
}

/* -----------------------------------------
   Print Styles
   ----------------------------------------- */
@media print {
    .header,
    .nav__toggle,
    .hero__cta,
    .contact__form-wrapper {
        display: none;
    }

    body {
        font-size: 12pt;
        color: #000;
    }

    .hero {
        padding-top: 0;
    }
}