/* =============================================
   Elektriker Template — Base Styles
   ============================================= */

:root {
    --color-form-success-text: #2e7d32;
    --color-form-error-text: #c62828;
    --color-form-field-error: #c62828;
}

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

/* CSS Custom Properties (mapped from theme schema via :root in base.html) */
:root {
    /* Spacing scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Spacing scale (8px base, numbered) */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 2.5rem;
    --space-8: 3rem;
    --space-9: 4rem;
    --space-10: 5rem;
    --space-11: 6rem;
    --space-12: 8rem;

    /* Section/container fluid spacing */
    --section-pad-y: clamp(3.5rem, 7vw, 6rem);
    --container-pad-x: clamp(1.25rem, 4vw, 2rem);

    /* Border radius — medium (existing) */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;

    /* Layered shadows */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 14px 36px rgba(0,0,0,0.1), 0 4px 10px rgba(0,0,0,0.05);
    --shadow-xl: 0 28px 64px rgba(0,0,0,0.12), 0 8px 18px rgba(0,0,0,0.06);

    /* Subtle card borders */
    --border-subtle: 1px solid rgba(0,0,0,0.06);
    --border-subtle-strong: 1px solid rgba(0,0,0,0.1);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
}

/* Base elements */
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.nav-is-open {
    overflow: hidden;
}

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

a {
    color: var(--color-accent);
    text-decoration-skip-ink: auto;
}

/* Focus indicators */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    background: var(--color-primary);
    color: var(--color-on-dark);
    padding: 0.5rem 1rem;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    z-index: 10000;
    font-size: 0.875rem;
    text-decoration: none;
    font-family: var(--font-body);
}
.skip-link:focus {
    top: 0;
    color: var(--color-on-dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    padding: 0.65rem 1.5rem;
    cursor: pointer;
    transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
    min-height: 44px;
    text-align: center;
    white-space: nowrap;
}
.btn-lg {
    padding: 0.8rem 2rem;
    font-size: 0.95rem;
}
.btn-accent {
    background: var(--color-accent);
    color: var(--color-on-dark);
    border-color: var(--color-accent);
}
.btn-accent:hover,
.btn-accent:focus {
    background: color-mix(in srgb, var(--color-accent) 85%, #000);
    border-color: color-mix(in srgb, var(--color-accent) 85%, #000);
    color: var(--color-on-dark);
}
.btn-outline-light {
    background: transparent;
    color: var(--color-on-dark);
    border-color: var(--overlay-on-dark-20);
}
.btn-outline-light:hover,
.btn-outline-light:focus {
    background: var(--overlay-on-dark-10);
    border-color: var(--overlay-on-dark-40);
    color: var(--color-on-dark);
}
.btn-outline {
    background: transparent;
    color: var(--color-text);
    border-color: var(--color-surface);
}
.btn-outline:hover,
.btn-outline:focus {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Page hero (shared across services, about, contact) */
.page-hero {
    background: var(--color-primary);
    padding: 3rem 1.25rem 3.5rem;
    position: relative;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 59px,
            var(--overlay-on-dark-05) 59px,
            var(--overlay-on-dark-05) 60px
        );
    pointer-events: none;
}
.page-hero-inner {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}
.page-hero h1 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(1.75rem, 4.5vw, 3rem);
    color: var(--color-on-dark);
    text-transform: uppercase;
    letter-spacing: -0.01em;
    margin: 0 0 0.75rem;
    text-wrap: balance;
}
.page-hero-subtitle {
    font-family: var(--font-body);
    font-size: 1.05rem;
    color: var(--overlay-on-dark-60);
    max-width: 55ch;
    line-height: 1.6;
}

/* Placeholder images */
.placeholder-img {
    width: 100%;
    background: linear-gradient(
        135deg,
        var(--color-surface) 0%,
        color-mix(in srgb, var(--color-surface) 80%, var(--color-primary)) 50%,
        var(--color-surface) 100%
    );
    border-radius: var(--radius-md);
    display: block;
    object-fit: cover;
    position: relative;
}
.placeholder-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 30% 40%, rgba(0,0,0,0.02) 0%, transparent 50%),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 19px,
            rgba(0,0,0,0.02) 19px,
            rgba(0,0,0,0.02) 20px
        );
    border-radius: inherit;
    pointer-events: none;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}
.form-group label {
    display: block;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-text);
    margin-bottom: 0.4rem;
}
.form-group input,
.form-group textarea {
    display: block;
    width: 100%;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-background);
    border: 1px solid var(--color-surface);
    border-radius: var(--radius-sm);
    padding: 0.7rem 0.85rem;
    transition: border-color var(--transition-fast);
}
.form-group input:focus,
.form-group textarea:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: -1px;
    border-color: var(--color-accent);
}
.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Form validation */
.field-error {
    display: block;
    font-size: 0.8rem;
    color: var(--color-form-error-text);
    margin-top: 0.25rem;
    font-family: var(--font-body);
}
input[aria-invalid="true"],
textarea[aria-invalid="true"] {
    border-color: var(--color-form-error-text);
}
.form-message {
    font-family: var(--font-body);
    font-size: 0.9rem;
    padding: 0.75rem 0;
    min-height: 0;
}
.form-error {
    color: var(--color-form-error-text);
}
.form-success {
    color: var(--color-form-success-text);
}
.form-info {
    color: var(--color-text_muted);
    font-style: italic;
}

/* Mobile CTA */
.mobile-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 0.75rem 1rem;
    background: var(--color-header_bg);
    z-index: 90;
    display: block;
    border-top: 1px solid var(--overlay-on-dark-10);
}
.mobile-cta-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    background: var(--color-accent);
    color: var(--color-on-dark);
    text-decoration: none;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    min-height: 44px;
}
.mobile-cta-btn:hover {
    opacity: 0.9;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
}

/* Tablet */
@media (min-width: 768px) {
    .page-hero {
        padding: 4rem 2rem 4.5rem;
    }
    .mobile-cta {
        display: none;
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .page-hero {
        padding: 5rem 2rem 5.5rem;
    }
}