/* ===================================
   Arkitekt — Base Styles
   =================================== */

:root {
    --color-form-success-text: #27ae60;
    --color-form-error-text: #c0392b;
    --color-form-field-error: #c0392b;

    /* Spacing scale (8px base) */
    --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);

    /* Radius — sharp, architectural */
    --radius-sm: 2px;
    --radius-md: 4px;
    --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);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body), 'Work Sans', sans-serif;
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.65;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading), 'Cormorant Garamond', serif;
    font-weight: 600;
    line-height: 1.15;
    text-wrap: balance;
    color: var(--color-text);
}

h1 {
    font-size: clamp(2.5rem, 7vw, 5.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 3rem);
    font-weight: 600;
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.15rem, 2vw, 1.5rem);
    font-weight: 600;
}

p {
    max-width: 65ch;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-text);
}

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

ul, ol {
    list-style: none;
}

address {
    font-style: normal;
}

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

/* 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 4px 4px;
    z-index: 10000;
    font-size: 0.875rem;
    font-family: var(--font-body), sans-serif;
}

.skip-link:focus {
    top: 0;
    color: var(--color-on-dark);
}

/* Section labels — small uppercase, architectural */
.section-label {
    display: block;
    font-family: var(--font-body), sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-family: var(--font-body), sans-serif;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-decoration: none;
    border: none;
    border-radius: 0;
    cursor: pointer;
    transition: all 0.25s ease;
    min-height: 44px;
    text-align: center;
}

.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-on-dark);
}

.btn-accent:hover {
    background-color: var(--color-text);
    color: var(--color-background);
}

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

.btn-dark:hover {
    background-color: var(--color-accent);
    color: var(--color-on-dark);
}

/* Text links with arrow */
.text-link {
    font-family: var(--font-body), sans-serif;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

.text-link:hover {
    color: var(--color-text);
}

/* Page hero — shared across subpages */
.page-hero {
    padding: 8rem 1.5rem 4rem;
    background-color: var(--color-background);
}

.page-hero-inner {
    max-width: 800px;
}

.page-hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 1rem;
}

.page-hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text_muted);
    max-width: 550px;
    line-height: 1.7;
}

/* CTA warm section — shared pattern breaker */
.cta-warm {
    padding: 5rem 1.5rem;
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--color-accent) 12%, var(--color-background)) 0%,
        color-mix(in srgb, var(--color-accent) 6%, var(--color-background)) 100%
    );
    text-align: center;
}

.cta-warm-inner {
    max-width: 600px;
    margin: 0 auto;
}

.cta-warm h2 {
    margin-bottom: 0.75rem;
}

.cta-warm p {
    color: var(--color-text_muted);
    margin: 0 auto 2rem;
    max-width: 500px;
}

.cta-warm-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

/* Placeholder images */
.placeholder-img,
.project-card-image img,
.project-entry-image img,
.philosophy-image img,
.team-member-image img {
    width: 100%;
    display: block;
    object-fit: cover;
    background: linear-gradient(
        145deg,
        var(--color-surface) 0%,
        color-mix(in srgb, var(--color-primary) 8%, var(--color-surface)) 50%,
        var(--color-surface) 100%
    );
}

/* Form styles */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text_muted);
    margin-bottom: 0.4rem;
}

.form-optional {
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    font-size: 0.75rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 0;
    font-family: var(--font-body), sans-serif;
    font-size: 1rem;
    color: var(--color-text);
    background: transparent;
    border: none;
    border-bottom: 1px solid color-mix(in srgb, var(--color-text_muted) 40%, transparent);
    border-radius: 0;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-bottom-color: var(--color-accent);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.field-error {
    display: block;
    font-size: 0.8rem;
    color: var(--color-form-error-text);
    margin-top: 0.25rem;
}

input[aria-invalid="true"],
textarea[aria-invalid="true"] {
    border-bottom-color: var(--color-form-error-text);
}

.form-message {
    margin-bottom: 1rem;
    padding: 0;
    font-size: 0.9rem;
}

.form-message:empty {
    display: none;
}

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

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

.form-info {
    color: var(--color-text_muted);
}

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

/* Responsive */
@media (min-width: 768px) {
    .page-hero {
        padding: 10rem 3rem 5rem;
    }

    .cta-warm {
        padding: 7rem 3rem;
    }

    .cta-warm-actions {
        flex-direction: row;
        justify-content: center;
    }
}

@media (min-width: 1024px) {
    .page-hero {
        padding: 12rem 4rem 6rem;
    }

    .page-hero-inner {
        margin-left: 8%;
    }
}