/* ==========================================================================
   Nordic Price Tracker - Stylesheet
   Minimalist Nordic Design
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables - Nordic Color Palette
   -------------------------------------------------------------------------- */
:root {
    /* Primary Colors - Deep Nordic Blue */
    --color-primary: #1e3a5f;
    --color-primary-light: #2d4a6f;
    --color-primary-dark: #152a47;

    /* Accent - Fjord Blue */
    --color-accent: #4a90d9;
    --color-accent-light: #6ba3e0;
    --color-accent-dark: #3a7bc8;

    /* Neutrals - Snow & Stone */
    --color-bg: #f8fafc;
    --color-bg-alt: #ffffff;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-text-muted: #9ca3af;
    --color-border: #e5e7eb;

    /* Feedback Colors */
    --color-success: #10b981;
    --color-error: #ef4444;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height: 1.6;

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

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: var(--line-height);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --------------------------------------------------------------------------
   Language Navigation
   -------------------------------------------------------------------------- */
.lang-nav {
    position: fixed;
    top: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    z-index: 100;
    background: var(--color-bg-alt);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
}

.lang-btn {
    background: none;
    border: none;
    font-family: var(--font-family);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-light);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.lang-btn.active {
    color: var(--color-primary);
    background: var(--color-bg);
}

.lang-divider {
    color: var(--color-border);
    font-size: 0.75rem;
}

/* --------------------------------------------------------------------------
   Container & Layout
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
    flex: 1;
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.logo-icon {
    font-size: 1.75rem;
    color: var(--color-accent);
}

.badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* --------------------------------------------------------------------------
   Features Section
   -------------------------------------------------------------------------- */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-xl) 0;
}

.feature {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.feature:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.feature p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Signup Section
   -------------------------------------------------------------------------- */
.signup {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    margin: var(--spacing-xl) 0;
}

.signup h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-xs);
}

.signup > p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
}

.signup-form {
    max-width: 450px;
    margin: 0 auto;
}

/* Honeypot - hidden from users, visible to bots */
.honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    pointer-events: none;
}

.form-group {
    display: flex;
    gap: var(--spacing-xs);
    background: white;
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.form-group input[type="email"] {
    flex: 1;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-family);
    font-size: 1rem;
    color: var(--color-text);
    background: transparent;
    outline: none;
    min-width: 0; /* Allow shrinking on mobile */
}

.form-group input[type="email"]::placeholder {
    color: var(--color-text-muted);
}

.form-group button {
    background: var(--color-accent);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
    white-space: nowrap;
}

.form-group button:hover {
    background: var(--color-accent-dark);
}

.form-group button:active {
    transform: scale(0.98);
}

.privacy-note {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: var(--spacing-sm);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) var(--spacing-md);
    margin-top: auto;
}

.footer-content {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    text-align: center;
}

.copyright {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.footer-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm) var(--spacing-md);
}

.footer-nav a {
    font-size: 0.875rem;
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Message Toast
   -------------------------------------------------------------------------- */
.message {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 1000;
}

.message.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    visibility: visible;
}

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

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

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .hero {
        padding: var(--spacing-xl) 0;
    }

    .logo {
        font-size: 1.25rem;
    }

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

    .feature {
        padding: var(--spacing-md);
    }

    .signup {
        padding: var(--spacing-xl) var(--spacing-md);
        margin: var(--spacing-lg) 0;
        border-radius: var(--radius-md);
    }

    .form-group {
        flex-direction: column;
    }

    .form-group input[type="email"] {
        text-align: center;
    }

    .form-group button {
        width: 100%;
        padding: var(--spacing-md);
    }

    .footer-content {
        gap: var(--spacing-md);
    }

    .footer-nav {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .lang-nav {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .subtitle {
        font-size: 1rem;
    }
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero,
.features,
.signup {
    animation: fadeInUp 0.6s ease-out;
}

.features {
    animation-delay: 0.2s;
}

.signup {
    animation-delay: 0.4s;
}

/* Ensure elements are visible even if JS is disabled */
.hero,
.features,
.signup {
    animation-fill-mode: both;
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
    .lang-nav,
    .signup-form,
    .message {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .feature {
        break-inside: avoid;
    }
}