/* ============================================================
   West Texas Data Systems — style.css
   Color palette: Navy primary, gold accent, light gray bg
   ============================================================ */

/* ---------- Custom Properties ---------- */
:root {
    --clr-primary:      #1B3C6B;
    --clr-primary-dark: #122A4E;
    --clr-primary-mid:  #2A527A;
    --clr-accent:       #C8841A;
    --clr-accent-dark:  #A56A10;
    --clr-bg:           #F5F7FA;
    --clr-bg-alt:       #EBF0F8;
    --clr-dark:         #111827;
    --clr-text:         #374151;
    --clr-text-muted:   #6B7280;
    --clr-white:        #FFFFFF;
    --clr-border:       #D1D5DB;
    --clr-success:      #16A34A;
    --clr-success-bg:   #DCFCE7;
    --clr-success-bdr:  #86EFAC;
    --clr-error:        #DC2626;
    --clr-error-bg:     #FEE2E2;
    --clr-error-bdr:    #FECACA;

    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.09), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.1),  0 2px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.14);

    --radius:    6px;
    --radius-lg: 12px;
    --transition: 180ms ease;

    --nav-height: 68px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    font-size: 100%;
}

body {
    font-family: var(--font);
    color: var(--clr-text);
    background-color: var(--clr-bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }
button { font-family: var(--font); }

/* ---------- Typography ---------- */
h1 {
    font-size: clamp(2.1rem, 5.5vw, 3.75rem);
    line-height: 1.08;
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 700;
    color: var(--clr-primary);
    line-height: 1.2;
}

h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--clr-primary);
}

p { max-width: 68ch; }

/* ---------- Layout Utilities ---------- */
.container {
    width: min(1100px, 90%);
    margin-inline: auto;
}

.section {
    padding: 5.5rem 0;
}

.section-alt {
    background-color: var(--clr-bg-alt);
}

.section-lead {
    font-size: 1.1rem;
    color: var(--clr-text-muted);
    margin-top: 1rem;
    max-width: 64ch;
}

.section-body {
    margin-top: 1rem;
    color: var(--clr-text-muted);
    max-width: 64ch;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.875rem;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition:
        background-color var(--transition),
        color            var(--transition),
        border-color     var(--transition),
        box-shadow       var(--transition),
        transform        var(--transition);
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 3px solid var(--clr-accent);
    outline-offset: 3px;
}

.btn-accent {
    background-color: var(--clr-accent);
    color: var(--clr-white);
}

.btn-accent:hover {
    background-color: var(--clr-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(200, 132, 26, 0.35);
}

.btn-primary {
    background-color: var(--clr-primary);
    color: var(--clr-white);
}

.btn-primary:hover {
    background-color: var(--clr-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 200;
    height: var(--nav-height);
    background-color: rgba(18, 42, 78, 0.97);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 12px rgba(0,0,0,0.25);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    width: min(1200px, 90%);
    margin-inline: auto;
}

/* Logo */
.logo {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    gap: 1px;
}

.logo:focus-visible {
    outline: 2px solid var(--clr-accent);
    outline-offset: 4px;
    border-radius: 3px;
}

.logo-abbr {
    font-size: 1.55rem;
    font-weight: 900;
    color: var(--clr-accent);
    letter-spacing: 3px;
    line-height: 1;
}

.logo-name {
    font-size: 0.63rem;
    color: rgba(255,255,255,0.6);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* Nav links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 2.25rem;
}

.nav-links a {
    color: rgba(255,255,255,0.8);
    font-size: 0.925rem;
    font-weight: 500;
    padding-bottom: 3px;
    border-bottom: 2px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--clr-white);
    border-bottom-color: var(--clr-accent);
}

.nav-links a:focus-visible {
    outline: 2px solid var(--clr-accent);
    outline-offset: 4px;
    border-radius: 2px;
}

/* Hamburger toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
}

.nav-toggle span {
    display: block;
    height: 2px;
    background-color: var(--clr-white);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
    transform-origin: center;
}

/* Animate hamburger to X when open */
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
    position: relative;
    background: linear-gradient(
        135deg,
        var(--clr-primary-dark)  0%,
        var(--clr-primary)       55%,
        var(--clr-primary-mid)  100%
    );
    color: var(--clr-white);
    padding: 7rem 5%;
    min-height: 65vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

/* Subtle dot-grid texture */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,0.06) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
}

.hero-inner {
    position: relative;
    z-index: 1;
    max-width: 720px;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    color: var(--clr-accent);
    font-weight: 700;
    margin-bottom: 1.1rem;
    background-color: rgba(200, 132, 26, 0.12);
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
    border: 1px solid rgba(200, 132, 26, 0.3);
}

.hero h1 {
    color: var(--clr-white);
    margin-bottom: 1.375rem;
    text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.hero-tagline {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.78);
    margin-bottom: 2.25rem;
    max-width: 52ch;
    line-height: 1.7;
}

/* Established badge — decorative element top-right */
.hero-badge {
    position: absolute;
    top: 2rem;
    right: 5%;
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0.18;
    pointer-events: none;
}

.badge-label {
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--clr-white);
    font-weight: 600;
}

.badge-year {
    font-size: 5rem;
    font-weight: 900;
    color: var(--clr-white);
    line-height: 1;
    letter-spacing: -2px;
}

/* ============================================================
   ABOUT
   ============================================================ */
#about h2 {
    margin-bottom: 0;
}

/* ============================================================
   SERVICES GRID
   ============================================================ */
#services h2 {
    margin-bottom: 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.75rem;
    margin-top: 2.5rem;
}

.service-card {
    background: var(--clr-white);
    border-radius: var(--radius-lg);
    padding: 2.1rem 1.875rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--clr-border);
    transition: box-shadow var(--transition), transform var(--transition);
}

.service-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1.1rem;
    color: var(--clr-accent);
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-card h3 {
    margin-bottom: 0.6rem;
}

.service-card p {
    color: var(--clr-text-muted);
    font-size: 0.95rem;
    line-height: 1.65;
}

/* ============================================================
   CONTACT
   ============================================================ */
#contact h2 {
    margin-bottom: 0;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 3rem;
    align-items: start;
    margin-top: 2.5rem;
}

/* Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--clr-text);
}

.required { color: var(--clr-error); margin-left: 1px; }
.optional  { color: var(--clr-text-muted); font-weight: 400; font-size: 0.8em; }

.form-group input,
.form-group textarea {
    padding: 0.6rem 0.875rem;
    border: 1.5px solid var(--clr-border);
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: 1rem;
    color: var(--clr-text);
    background: var(--clr-white);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--clr-primary);
    box-shadow: 0 0 0 3px rgba(27, 60, 107, 0.14);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--clr-border);
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
    line-height: 1.6;
}

.form-status {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    display: none;
}

.form-status:not(:empty) {
    display: block;
}

.form-status--success {
    background-color: var(--clr-success-bg);
    color: var(--clr-success);
    border: 1px solid var(--clr-success-bdr);
}

.form-status--error {
    background-color: var(--clr-error-bg);
    color: var(--clr-error);
    border: 1px solid var(--clr-error-bdr);
}

/* Contact sidebar */
.contact-info {
    background: var(--clr-primary);
    color: var(--clr-white);
    border-radius: var(--radius-lg);
    padding: 2rem 1.75rem;
    box-shadow: var(--shadow-md);
}

.contact-info h3 {
    color: var(--clr-white);
    margin-bottom: 0.5rem;
    font-size: 1.15rem;
}

.contact-info > p {
    color: rgba(255,255,255,0.72);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
}

.contact-phone {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--clr-accent);
    letter-spacing: -0.02em;
    transition: color var(--transition);
}

.contact-phone:hover {
    color: #e8a030;
}

.contact-location {
    margin-top: 0.75rem;
    font-size: 0.82rem;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
    background-color: var(--clr-dark);
    color: rgba(255,255,255,0.55);
    padding: 1.75rem 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.footer-copy { font-size: 0.875rem; }

.footer-phone a {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--clr-accent);
    transition: color var(--transition);
}

.footer-phone a:hover {
    color: var(--clr-white);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .contact-info {
        order: -1;
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem 2rem;
        align-items: center;
        padding: 1.5rem;
    }

    .contact-info h3,
    .contact-info > p {
        width: 100%;
        margin-bottom: 0;
    }
}

@media (max-width: 640px) {
    .nav-toggle {
        display: flex;
    }

    /* Slide-down mobile menu */
    .nav-links {
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background-color: var(--clr-primary-dark);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 300ms ease;
        box-shadow: 0 8px 20px rgba(0,0,0,0.25);
    }

    .nav-links.is-open {
        max-height: 280px;
    }

    .nav-links a {
        padding: 1rem 5%;
        border-bottom: 1px solid rgba(255,255,255,0.08);
        border-left: none;
    }

    .hero {
        padding: 5rem 5% 4rem;
        min-height: 55vh;
    }

    .hero-badge {
        display: none;
    }

    .section {
        padding: 4rem 0;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
        gap: 0.4rem;
    }
}

@media (max-width: 400px) {
    .logo-name {
        display: none;
    }
}