:root {
    --color-bg: #fff;
    --color-text: #00171f;
    --color-muted: #003459;
    --color-accent: #007ea7;
    --color-accent-hover: #003459;
    --color-bright: #00a8e8;
    --color-border: #d0d0d0;
    --color-card-bg: #fff;
    --color-ok: #2d6a4f;
    --color-err: #9d0208;
    --section-gap: 2rem;
    --max-width: 860px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* Header */

header {
    padding: 1.75rem 0 2.5rem;
}

header .container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    height: 36px;
    width: auto;
}

.tagline {
    display: none;
    color: var(--color-accent);
    font-size: 1.15rem;
    font-weight: 500;
    flex: 1;
    text-align: center;
}

/* About */

.about {
    padding: 0 0 var(--section-gap);
}

.about-box {
    background: var(--color-card-bg);
    border: 1px solid #e8e8e8;
    border-left: 4px solid var(--color-bright);
    border-radius: 6px;
    padding: 1.5rem;
}

.about-box p {
    font-size: 1.05rem;
    color: var(--color-muted);
}

/* Services */

.services {
    padding: 0 0 var(--section-gap);
}

.services h2 {
    margin-bottom: 1.25rem;
    font-size: 1.5rem;
    color: var(--color-muted);
}

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

.service {
    background: var(--color-card-bg);
    border: 1px solid #e8e8e8;
    border-left: 4px solid var(--color-accent);
    border-radius: 6px;
    padding: 1.5rem;
}

.service:nth-child(2) { border-left-color: var(--color-bright); }
.service:nth-child(3) { border-left-color: var(--color-muted); }
.service:nth-child(4) { border-left-color: var(--color-text); }

.service h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--color-muted);
}

.service p {
    color: var(--color-muted);
    font-size: 0.95rem;
}

/* Clients */

.clients {
    padding: 0 0 var(--section-gap);
}

.clients h2 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
    color: var(--color-muted);
}

.client-group {
    margin-bottom: 0.4rem;
    display: flex;
    gap: 0.5rem;
    align-items: baseline;
}

.client-group h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    min-width: 4.5rem;
}

.client-group p {
    color: var(--color-muted);
    font-size: 0.95rem;
}

/* Contact */

.contact {
    padding: 0 0 var(--section-gap);
}

.contact h2 {
    margin-bottom: 0.25rem;
    font-size: 1.5rem;
    color: var(--color-muted);
}

.contact-sub {
    color: var(--color-accent);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

form {
    max-width: 100%;
}

.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
    font-weight: 500;
}

input[type="email"],
textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    background: var(--color-card-bg);
    color: var(--color-text);
}

input[type="email"]:focus,
textarea:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 1px;
    border-color: transparent;
}

textarea {
    resize: vertical;
}

.hp {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    overflow: hidden;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
}

button[type="submit"] {
    padding: 0.65rem 2rem;
    background: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s;
}

button[type="submit"]:hover {
    background: var(--color-accent-hover);
}

.toast {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    text-align: center;
    padding: 0.85rem 1rem;
    font-size: 0.95rem;
    font-weight: 500;
    z-index: 100;
    transition: opacity 0.6s;
}

.toast-ok {
    background: #e8f5e9;
    color: var(--color-ok);
}

.toast-err {
    background: #fbe9e7;
    color: var(--color-err);
}

/* Footer */

footer {
    padding: 0 0 1.75rem;
    text-align: center;
    color: var(--color-muted);
    font-size: 0.85rem;
}

/* Responsive */

@media (min-width: 600px) {
    .tagline {
        display: block;
    }

    .services-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 900px) {
    .logo {
        height: 42px;
    }
}