/* ========================================
   CSS Custom Properties (Theme)
   ======================================== */
:root {
    /* Colors - Earthy/Natural Theme */
    --color-primary: #5D4E37;
    --color-primary-dark: #4A3E2C;
    --color-secondary: #3D5A45;
    --color-secondary-dark: #2E4635;
    --color-accent: #D4C4A8;
    --color-accent-light: #E5D9C3;
    --color-background: #F5F2EB;
    --color-background-alt: #FFFDF9;
    --color-text: #2C2C2C;
    --color-text-light: #5A5A5A;
    --color-white: #FFFFFF;
    --color-error: #C44536;
    --color-success: #3D5A45;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    --font-size-4xl: 3rem;
    --line-height-base: 1.6;
    --line-height-tight: 1.3;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-background);
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

/* ========================================
   Utility Classes
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.section__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
}

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

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

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

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

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.nav__logo {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
}

.nav__toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-fast);
}

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

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

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

.nav__menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    display: none;
    flex-direction: column;
    gap: var(--spacing-md);
}

.nav__menu.is-open {
    display: flex;
}

.nav__link {
    font-weight: 500;
    color: var(--color-text);
    padding: var(--spacing-sm) 0;
    transition: color var(--transition-fast);
}

.nav__link:hover {
    color: var(--color-secondary);
}

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

    .nav__menu {
        position: static;
        display: flex;
        flex-direction: row;
        box-shadow: none;
        padding: 0;
        gap: var(--spacing-xl);
    }
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding: calc(var(--spacing-4xl) + 60px) 0 var(--spacing-4xl);
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-background) 100%);
    text-align: center;
}

.hero__title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-lg);
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

@media (min-width: 768px) {
    .hero {
        padding: calc(var(--spacing-4xl) + 80px) 0 var(--spacing-4xl);
    }

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

/* ========================================
   Services Section
   ======================================== */
.services {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-background-alt);
}

.services__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

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

@media (min-width: 1024px) {
    .services__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.service-card__icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-lg);
    background-color: var(--color-accent-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-card__icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-primary);
}

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

.service-card__description {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: var(--line-height-base);
}

/* Secondary services */
.section__subtitle--secondary {
    margin-top: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    font-weight: 600;
}

.services__grid--secondary {
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .services__grid--secondary {
        grid-template-columns: repeat(3, 1fr);
    }
}

.service-card--secondary {
    padding: var(--spacing-lg);
    background-color: var(--color-accent-light);
}

.service-card--secondary .service-card__title {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
}

.service-card--secondary .service-card__description {
    font-size: var(--font-size-sm);
}

/* ========================================
   About Section
   ======================================== */
.about {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-background);
}

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

.about__text {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.about__features {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
}

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

.about__features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-secondary);
}

.about__features li::before {
    content: "✓";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background-color: var(--color-secondary);
    color: var(--color-white);
    border-radius: 50%;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

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

.contact__form {
    max-width: 600px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

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

    .form__group--full {
        grid-column: span 2;
    }
}

.form__group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form__label {
    font-weight: 500;
    color: var(--color-primary);
    font-size: var(--font-size-sm);
}

.form__input {
    padding: var(--spacing-md);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    background-color: var(--color-white);
    transition: border-color var(--transition-fast);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-secondary);
}

.form__input::placeholder {
    color: var(--color-text-light);
    opacity: 0.6;
}

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

.form__select {
    cursor: pointer;
    appearance: none;
    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='%235D4E37' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: calc(var(--spacing-md) * 2 + 12px);
}

.form__select:invalid {
    color: var(--color-text-light);
    opacity: 0.6;
}

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

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

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-primary);
    text-align: center;
}

.footer__text {
    color: var(--color-accent-light);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.footer__location {
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    opacity: 0.8;
}

/* ========================================
   Form Success State
   ======================================== */
.form-success {
    text-align: center;
    padding: var(--spacing-2xl);
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    max-width: 600px;
    margin: 0 auto;
}

.form-success__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    background-color: var(--color-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-2xl);
}

.form-success__title {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.form-success__text {
    color: var(--color-text-light);
}

/* ========================================
   Thanks Page
   ======================================== */
.thanks {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--spacing-4xl) + 60px) 0 var(--spacing-4xl);
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-background) 100%);
}

.thanks__content {
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.thanks__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    background-color: var(--color-secondary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    font-weight: bold;
}

.thanks__title {
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.thanks__text {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    line-height: var(--line-height-base);
}

.nav__menu--visible {
    display: flex;
    position: static;
    box-shadow: none;
    padding: 0;
}