/* Shared site styles: tokens, base, layout utilities, navbar, footer */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-primary: #2D5A27;
    --color-primary-light: #4CAF50;
    --color-light-green: #E8F5E9;
    --color-dark: #1A1A1A;
    --color-body: #4A4A4A;
    --color-white: #FFFFFF;
    --color-gray: #F5F5F5;
    --color-apple-blue: #007AFF;
    --color-apple-blue-hover: #0056b3;

    --font-heading: Georgia, 'Times New Roman', serif;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 80px;
    --spacing-2xl: 120px;

    --max-width: 1200px;
    --border-radius: 16px;
    --border-radius-lg: 32px;

    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 18px;
    line-height: 1.6;
    color: #4A4A4A;
    background-color: #FFFFFF;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--color-dark);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
}

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

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

a:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: var(--spacing-sm) 0;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    color: var(--color-dark);
    font-weight: 700;
    font-size: 1.25rem;
}

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

.navbar-logo img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.navbar-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.nav-menu-toggle {
    display: none;
    border: 1px solid #d9e3d9;
    background: var(--color-white);
    border-radius: 10px;
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    cursor: pointer;
}

.nav-menu-icon,
.nav-menu-icon::before,
.nav-menu-icon::after {
    display: block;
    width: 20px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-menu-icon {
    position: relative;
}

.nav-menu-icon::before,
.nav-menu-icon::after {
    content: '';
    position: absolute;
    left: 0;
}

.nav-menu-icon::before {
    top: -6px;
}

.nav-menu-icon::after {
    top: 6px;
}

.navbar.is-menu-open .nav-menu-icon {
    background: transparent;
}

.navbar.is-menu-open .nav-menu-icon::before {
    transform: translateY(6px) rotate(45deg);
}

.navbar.is-menu-open .nav-menu-icon::after {
    transform: translateY(-6px) rotate(-45deg);
}

.nav-button {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-body);
    text-decoration: none;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-button:hover {
    background-color: var(--color-light-green);
    color: var(--color-primary);
}

.nav-button.active {
    background-color: var(--color-light-green);
    color: var(--color-primary);
    font-weight: 600;
}

.nav-button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.nav-login {
    background-color: var(--color-primary);
    color: var(--color-white);
    border: 2px solid rgba(45, 90, 39, 0.4);
    font-weight: 700;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(45, 90, 39, 0.28);
}

.nav-login:hover {
    background-color: #3a7232;
    color: var(--color-white);
    border-color: rgba(45, 90, 39, 0.55);
    box-shadow: 0 4px 14px rgba(45, 90, 39, 0.35);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--color-gray);
    padding: var(--spacing-lg) 0;
    border-top: 1px solid #e2e6e2;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.footer-group-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    margin: 0;
    padding: 0;
}

.footer-links a {
    font-size: 0.78rem;
    font-weight: 500;
    text-decoration: none;
}

.footer a {
    color: var(--color-body);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-meta {
    font-size: 0.9rem;
    color: var(--color-body);
    line-height: 1.7;
}

.footer-meta p {
    margin-bottom: 0;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        align-items: start;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 640px) {
    .navbar-content {
        position: relative;
        align-items: center;
    }

    .nav-menu-toggle {
        display: inline-flex;
        margin-left: auto;
    }

    .navbar-links {
        display: none;
        position: absolute;
        top: calc(100% + 8px);
        right: 0;
        width: 100%;
        background: var(--color-white);
        border: 1px solid #e2e6e2;
        border-radius: 12px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
        padding: var(--spacing-xs);
        flex-direction: column;
        gap: 4px;
    }

    .navbar.is-menu-open .navbar-links {
        display: flex;
    }

    .nav-button {
        width: 100%;
    }
}

/* ===== Email Signup Section ===== */
.signup {
    padding: var(--spacing-xl) 0;
    background: var(--color-light-green);
}

.signup-content {
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
}

.signup-content h2 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.signup-content > p {
    color: var(--color-body);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.signup-benefits {
    list-style: none;
    padding: 0;
    margin: 0 auto var(--spacing-md);
    display: inline-flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    text-align: left;
}

.signup-benefits li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    color: var(--color-body);
}

.signup-form-row {
    display: flex;
    gap: var(--spacing-xs);
    max-width: 480px;
    margin: 0 auto;
}

.signup-form-row input[type="email"] {
    flex: 1;
    padding: var(--spacing-sm);
    font-size: 1rem;
    font-family: var(--font-body);
    border: 2px solid #ddd;
    border-radius: 12px;
    outline: none;
    transition: border-color var(--transition-fast);
    color: var(--color-dark);
    background: var(--color-white);
}

.signup-form-row input[type="email"]:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(45, 90, 39, 0.15);
}

.signup-form-row input[type="email"]::placeholder {
    color: #aaa;
}

.signup-button {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-primary);
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-body);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 4px 14px rgba(45, 90, 39, 0.3);
}

.signup-button:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(45, 90, 39, 0.4);
}

.signup-button:focus {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
}

.signup-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.signup-status {
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    min-height: 1.4em;
}

.signup-status.success {
    color: var(--color-primary);
    font-weight: 600;
}

.signup-status.error {
    color: #d32f2f;
    font-weight: 500;
}

@media (max-width: 480px) {
    .signup-form-row {
        flex-direction: column;
    }

    .signup-button {
        width: 100%;
    }
}