/* =====================================================
   HAYAKAWA ELECTRONICS VIETNAM — DESIGN SYSTEM
   Industrial Corporate Teal 2026
   -----------------------------------------------------
   Loaded AFTER theme-corporate-teal.css and the DB theme
   override, so this file has final say on shared
   components (buttons, forms, sections, accessibility).
   All colors reference design tokens (CSS variables)
   defined in theme-corporate-teal.css / header override.
   ===================================================== */

/* -----------------------------------------------------
   1. DESIGN TOKENS — fallbacks + system-wide scales
   (Primary token source is theme-corporate-teal.css.
   These :root entries only add spacing / typography
   scales and guarantee fallbacks.)
   ----------------------------------------------------- */
:root {
    /* 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-8: 3rem;
    --space-10: 4rem;
    --space-12: 5rem;

    /* Section vertical rhythm */
    --section-py: 4rem;

    /* Container */
    --container-max: 1200px;

    /* Typography scale */
    --fs-xs: 0.8125rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.25rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 1.875rem;
    --fs-4xl: 2.25rem;
    --fs-5xl: 2.75rem;

    --lh-tight: 1.2;
    --lh-snug: 1.4;
    --lh-normal: 1.6;

    --fw-normal: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;
}

/* -----------------------------------------------------
   2. BASE TYPOGRAPHY RHYTHM
   ----------------------------------------------------- */
body {
    font-family: var(--font-family, 'Inter', 'Roboto', sans-serif);
    line-height: var(--lh-normal);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading, 'Montserrat', sans-serif);
    line-height: var(--lh-tight);
    font-weight: var(--fw-bold);
}

h1 { font-size: var(--fs-5xl); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }

@media (max-width: 768px) {
    h1 { font-size: var(--fs-4xl); }
    h2 { font-size: var(--fs-2xl); }
    :root { --section-py: 2.75rem; }
}

/* -----------------------------------------------------
   3. SKIP-TO-CONTENT (accessibility)
   ----------------------------------------------------- */
.skip-to-content {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 2000;
    padding: 0.75rem 1.25rem;
    background: var(--primary, #0D9488);
    color: #fff !important;
    font-weight: var(--fw-semibold);
    text-decoration: none;
    border-radius: 0 0 var(--radius, 8px) 0;
}
.skip-to-content:focus {
    left: 0;
}

/* -----------------------------------------------------
   4. VISIBLE FOCUS STATES (WCAG)
   ----------------------------------------------------- */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.btn:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid var(--primary, #0D9488);
    outline-offset: 2px;
    border-radius: 3px;
}

/* -----------------------------------------------------
   5. UNIFIED BUTTON SYSTEM
   ----------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-family, inherit);
    font-size: var(--fs-base);
    font-weight: var(--fw-semibold);
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius, 8px);
    cursor: pointer;
    transition: all var(--transition-normal, 0.25s ease);
    white-space: nowrap;
}

.btn-lg {
    padding: 0.95rem 2rem;
    font-size: var(--fs-lg);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: var(--fs-sm);
}

/* Primary */
.btn-primary {
    background: var(--gradient-primary, linear-gradient(135deg, var(--primary), var(--primary-light))) !important;
    color: var(--text-on-primary, #fff) !important;
    border-color: transparent !important;
    box-shadow: 0 4px 14px rgba(var(--primary-rgb, 13,148,136), 0.35) !important;
}
.btn-primary:hover {
    background: var(--primary-dark, #0F766E) !important;
    color: #fff !important;
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(var(--primary-rgb, 13,148,136), 0.45) !important;
}

/* Secondary (solid blue) */
.btn-secondary {
    background: var(--secondary, #3B82F6) !important;
    color: #fff !important;
    border-color: transparent !important;
}
.btn-secondary:hover {
    background: var(--secondary-dark, #2563EB) !important;
    color: #fff !important;
    transform: translateY(-2px);
}

/* Outline */
.btn-outline {
    background: transparent !important;
    color: var(--primary, #0D9488) !important;
    border: 2px solid var(--primary, #0D9488) !important;
}
.btn-outline:hover {
    background: var(--primary, #0D9488) !important;
    color: #fff !important;
}

/* Outline light (on dark backgrounds) */
.btn-outline-light {
    background: transparent !important;
    color: #fff !important;
    border: 2px solid rgba(255,255,255,0.6) !important;
}
.btn-outline-light:hover {
    background: #fff !important;
    color: var(--primary, #0D9488) !important;
    border-color: #fff !important;
}

/* Accent / CTA */
.btn-accent,
.btn-cta {
    background: var(--gradient-cta, linear-gradient(135deg, var(--accent), var(--accent-light))) !important;
    color: var(--text-primary, #1E293B) !important;
    border-color: transparent !important;
}
.btn-accent:hover,
.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(var(--accent-rgb, 245,158,11),0.4) !important;
}

/* -----------------------------------------------------
   6. SECTION RHYTHM & HEADINGS
   ----------------------------------------------------- */
.section,
section.section {
    padding: var(--section-py) 0;
}

.section-header,
.section-title-wrap {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--space-8);
}

.section-header h2,
.section-title {
    margin-bottom: var(--space-3);
}

.section-header p,
.section-subtitle,
.subtitle {
    color: var(--text-secondary, #475569);
    font-size: var(--fs-lg);
    line-height: var(--lh-snug);
}

/* -----------------------------------------------------
   7. CARD BASE (consistency)
   ----------------------------------------------------- */
.card,
.product-card,
.news-card,
.finder-card,
.why-card,
.cert-item,
.capability-card,
.process-card,
.branch-card,
.job-card,
.feature-card {
    border-radius: var(--radius-lg, 12px);
    transition: transform var(--transition-normal, 0.25s ease),
                box-shadow var(--transition-normal, 0.25s ease),
                border-color var(--transition-normal, 0.25s ease);
}

/* -----------------------------------------------------
   8. FORM SYSTEM (clean, aligned)
   ----------------------------------------------------- */
.form-group {
    margin-bottom: var(--space-5);
}

.form-group label,
.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    color: var(--text-primary, #1E293B);
}

.form-group .required,
.form-label .required {
    color: var(--error, #EF4444);
}

.form-control,
.form-group input:not([type="checkbox"]):not([type="radio"]),
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.7rem 0.9rem;
    font-family: inherit;
    font-size: var(--fs-base);
    color: var(--text-primary, #1E293B);
    background: #fff;
    border: 1px solid var(--border-default, #CBD5E1);
    border-radius: var(--radius, 8px);
    transition: border-color var(--transition-fast, 0.15s ease),
                box-shadow var(--transition-fast, 0.15s ease);
}

.form-control:focus,
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary, #0D9488) !important;
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb, 13,148,136), 0.15) !important;
    outline: none;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

/* Two-column form rows */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
}
@media (max-width: 640px) {
    .form-row { grid-template-columns: 1fr; gap: 0; }
}

/* -----------------------------------------------------
   9. CONTAINER GUARD
   ----------------------------------------------------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* -----------------------------------------------------
   10. HEADER / TOPBAR ALIGNMENT POLISH
   ----------------------------------------------------- */
.header-top-left {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}
.header-top-right {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Compare icon now a <button>: reset native button styling */
button.compare-icon {
    border: none;
    cursor: pointer;
    font: inherit;
}

/* Language switcher button keyboard focus */
.language-switcher .lang-btn:focus-visible {
    outline: 3px solid #fff;
    outline-offset: 2px;
}

/* Mobile: hide phone/email text labels gracefully on very small screens */
@media (max-width: 575px) {
    .header-top-left span:nth-child(2) {
        margin-left: 0.75rem !important;
    }
    .header-top-left {
        font-size: 0.78rem;
    }
}

/* -----------------------------------------------------
   11. UTILITY
   ----------------------------------------------------- */
.text-center { text-align: center; }
.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;
}

/* Graceful local certificate placeholder (replaces external via.placeholder.com) */
.cert-item .cert-placeholder,
.cert-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 80px;
    font-size: 2.5rem;
    color: var(--primary, #0D9488);
    background: var(--primary-50, #F0FDFA);
    border-radius: var(--radius, 8px);
}