:root {
    --primary-color: #0d47a1;
    --primary-light: #5472d3;
    --primary-dark: #002171;
    --secondary-color: #00b0ff;
    --bg-color: #f8faff;
    --text-color: #1c2331;
    --card-bg: #ffffff;
    --border-color: #e0e0e0;
    --nav-bg: #ffffff;
    --footer-bg: #0d1b2a;
    --footer-text: #e0e0e0;
    --success: #2e7d32;
    --danger: #c62828;
}

[data-theme="dark"] {
    --primary-color: #1976d2;
    --primary-light: #63a4ff;
    --primary-dark: #004ba0;
    --secondary-color: #40c4ff;
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --card-bg: #1e1e1e;
    --border-color: #333333;
    --nav-bg: #1e1e1e;
    --footer-bg: #0a0a0a;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1 0 auto;
}

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

a:hover {
    color: var(--primary-light);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header & Navbar */
header {
    background-color: var(--nav-bg);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo span {
    color: var(--secondary-color);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links li a {
    color: var(--text-color);
    font-weight: 500;
}

.nav-links li a:hover {
    color: var(--primary-color);
}

/* Dark Mode Toggle */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
}

.theme-switch {
    display: inline-block;
    height: 24px;
    position: relative;
    width: 48px;
}

.theme-switch input {
    display: none;
}

.slider {
    background-color: #ccc;
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
}

.slider.round {
    border-radius: 24px;
}

.slider.round:before {
    border-radius: 50%;
}

.slider:before {
    background-color: #fff;
    bottom: 3px;
    content: "";
    height: 18px;
    left: 3px;
    position: absolute;
    transition: .4s;
    width: 18px;
}

input:checked+.slider {
    background-color: var(--primary-color);
}

input:checked+.slider:before {
    transform: translateX(24px);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 1rem;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: #fff;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--secondary-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: #0091ea;
    color: #fff;
    transform: translateY(-2px);
}

/* Section Common */
.section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: var(--text-color);
}

/* Trust Section */
.trust-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.trust-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
}

.trust-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.trust-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.tool-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--primary-dark);
}

.tool-card p {
    flex-grow: 1;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    color: var(--text-color);
    opacity: 0.8;
}

/* Calculators Layout */
.calculator-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 2rem;
}

.calc-input-section,
.calc-result-section {
    flex: 1 1 300px;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}

.calc-result-section {
    background: linear-gradient(to bottom right, var(--card-bg), var(--bg-color));
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 2px rgba(25, 118, 210, 0.2);
}

.result-box {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-color);
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.result-box h4 {
    font-size: 1rem;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.result-box .amt {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    justify-content: center;
}

.btn-secondary {
    background-color: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-color);
}

/* Amortization Table */
.table-responsive {
    overflow-x: auto;
    margin-top: 2rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
}

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

th {
    background-color: var(--bg-color);
    font-weight: 600;
}

/* Content Formatting */
.content-section {
    margin: 3rem 0;
    padding: 2rem 2.5rem;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

/*
 * When .container and .content-section are on the SAME element
 * (pattern used by all /pages/ prose pages), constrain the card to
 * a comfortable reading width and give it auto horizontal margins so
 * it never stretches edge-to-edge on wide desktop screens.
 */
.container.content-section {
    max-width: 100%;
    margin-top: 2rem;
    margin-bottom: 3rem;
    padding: 2.5rem 3rem;
}

/* Slightly reduce side padding on narrow viewports */
@media (max-width: 960px) {
    .container.content-section {
        max-width: 100%;
        padding: 1.75rem 1.5rem;
    }
}

@media (max-width: 600px) {
    .container.content-section {
        padding: 1.25rem 1rem;
    }

    .content-section {
        padding: 1.25rem 1rem;
    }
}


.content-section h2,
.content-section h3 {
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-dark);
}

.content-section p {
    margin-bottom: 1rem;
}

.content-section ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

/* Footer */
footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 3rem 0;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer-col h4 {
    color: #fff;
    margin-bottom: 1rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col ul li a {
    color: var(--footer-text);
}

.footer-col ul li a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
    margin-top: 2rem;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--card-bg);
    color: var(--text-color);
    padding: 1rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 10000;
    display: none;
}

.cookie-banner.show {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

/* Nav Toggle Button (Mobile Hamburger) */
.nav-toggle-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle-btn.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle-btn.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle-btn.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Dropdown Nav */
.nav-dropdown {
    position: relative;
}

.nav-dropdown>a {
    cursor: pointer;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    min-width: 220px;
    z-index: 200;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    list-style: none;
    padding: 0.5rem 0;
}

.dropdown-menu li a {
    display: block;
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    color: var(--text-color);
    white-space: nowrap;
}

.dropdown-menu li a:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
    display: block;
}

/* Tool card enhancements */
.tool-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    display: block;
}

.tool-link-label {
    display: inline-block;
    margin-top: auto;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-color);
}

.tool-card:hover .tool-link-label {
    color: var(--primary-light);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-toggle-btn {
        display: flex;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--nav-bg);
        border-top: 1px solid var(--border-color);
        padding: 1rem 1.5rem;
        gap: 0.75rem;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        z-index: 999;
    }

    .nav-links.open {
        display: flex;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        border-left: 2px solid var(--border-color);
        padding-left: 1rem;
        margin-top: 0.25rem;
    }

    .nav-dropdown:hover .dropdown-menu,
    .nav-dropdown:focus-within .dropdown-menu {
        display: block;
    }

    header {
        position: relative;
    }

    .hero h1 {
        font-size: 1.9rem;
    }

    .calculator-layout {
        flex-direction: column;
    }

    .actions {
        flex-wrap: wrap;
    }
}

/* Print styles */
@media print {

    header,
    footer,
    .cookie-banner,
    .actions,
    nav {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    .calculator-layout {
        display: block;
    }

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

    table {
        font-size: 0.8rem;
    }
}