@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Poppins:wght@500;600&display=swap');

:root {
    --color-sky: #77c6ff;
    --color-navy: #1e3c72;
    --color-ink: #1f2937;
    --color-surface: #ffffff;
    --color-outline: rgba(30, 60, 114, 0.18);
    --shadow-soft: 0 10px 24px rgba(15, 23, 42, 0.12);
    --radius-card: 14px;
    --radius-button: 10px;
}

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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: var(--color-ink);
    background: linear-gradient(180deg, #bfe4ff 0%, #89b7dd 55%, #5d7b94 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

nav {
    background: var(--color-surface);
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.85rem 1.5rem;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 55px;
    width: auto;
    max-width: 220px;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.75rem;
}

.nav-menu a {
    color: var(--color-navy);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 0.9rem;
    border-radius: 999px;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background-color: var(--color-sky);
    color: var(--color-navy);
}

.hamburger,
.nav-overlay {
    display: none;
}

header {
    background: var(--color-ink);
    color: var(--color-surface);
    text-align: center;
    padding: 2rem 1.5rem 0.5rem;
    box-shadow: var(--shadow-soft);
}

header h1 {
    font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 2.4rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.05rem;
    opacity: 0.95;
}

.sub-nav {
    background: var(--color-navy);
    color: var(--color-surface);
    text-align: center;
    padding: 1rem 1.5rem 1rem;
    box-shadow: var(--shadow-soft);
}

.sub-nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.sub-nav ul li {
    flex: 0 0 auto;
}

.sub-nav ul li a {
    color: var(--color-surface);
    text-decoration: none;
    font-weight: 600;
    padding: 0.5rem 0.9rem;
    border-radius: 999px;
}

.sub-nav ul li a:hover,
.sub-nav ul li a:focus-visible {
    background: var(--color-sky);
    color: var(--color-navy);
}

.sub-nav ul li a.active {
    background: var(--color-sky);
    color: var(--color-navy);
}

main {
    max-width: 900px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 3rem;
    width: 100%;
    flex: 1;
    gap: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.content-section {
    background: var(--color-surface);
    border-radius: var(--radius-card);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--color-outline);
}

#payroll-viewer {
    width: 100%;
}

#payroll-viewer .navigation {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

#payroll-viewer .navigation form {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

#payroll-viewer table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

#payroll-viewer th,
#payroll-viewer td {
    padding: 0.65rem 0.75rem;
    border-bottom: 1px solid var(--color-outline);
    text-align: left;
}

#payroll-viewer thead th {
    background: rgba(30, 60, 114, 0.08);
    color: var(--color-navy);
    font-weight: 600;
}

#payroll-viewer tbody tr:nth-child(even) {
    background: rgba(30, 60, 114, 0.04);
}

#payroll-viewer .navigation a.disabled {
    pointer-events: none;
    opacity: 0.5;
}

#payroll-viewer .print-actions {
    margin-top: 1rem;
    display: flex;
    justify-content: flex-end;
}

#payroll-viewer .print-only {
    display: none;
}

.content-section p {
    margin-bottom: .5rem;
}

form {
    display: grid;
    gap: 0.85rem;
}

label {
    font-weight: 600;
    color: var(--color-navy);
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.7rem 0.9rem;
    border-radius: 8px;
    border: 1px solid #cbd5e1;
    font-size: 1rem;
}

button {
    padding: 0.75rem 1.2rem;
    border: none;
    border-radius: var(--radius-button);
    background: var(--color-navy);
    color: #ffffff;
    font-weight: 600;
    cursor: pointer;
}

a {
    color: var(--color-navy);
    font-weight: 600;
    text-decoration: none;
}

a:hover,
a:focus-visible {
    text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 3px solid rgba(159, 215, 255, 0.9);
    outline-offset: 2px;
}

@media (max-width: 768px) {
    .nav-container {
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-menu {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    header h1 {
        font-size: 1.9rem;
    }

    main {
        padding: 2rem 1rem 2.5rem;
    }

    .content-section {
        padding: 1.5rem;
    }
}

@media print {
    body {
        background: #ffffff;
        color: #000000;
    }

    nav,
    header,
    .sub-nav,
    .navigation,
    .print-actions,
    #payroll-viewer h2,
    #payroll-viewer h3,
    .content-section > h2 {
        display: none !important;
    }

    main {
        padding: 0;
        max-width: none;
    }

    .content-section {
        box-shadow: none;
        border: none;
        padding: 0;
    }

    #payroll-viewer .print-only {
        display: block;
        margin-bottom: 1rem;
        font-weight: 600;
        text-align: left;
    }

    #payroll-viewer table {
        margin-top: 0;
    }
}