@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root {
    --primary: #1d4ed8;
    --primary-dark: #1e40af;
    --primary-light: #eff6ff;
    --primary-gradient: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
    --accent-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #1d4ed8 100%);
    --card-gradient: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    --secondary: #0ea5e9;
    --success: #059669;
    --danger: #dc2626;
    --dark: #0f172a;
    --text: #1e293b;
    --muted: #64748b;
    --border: #e2e8f0;
    --bg: #f8fafc;
    --card: #ffffff;
    --radius: 16px;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 20px 40px -15px rgba(29, 78, 216, 0.18);
    --font: 'Plus Jakarta Sans', 'Inter', system-ui, -apple-system, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

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

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

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── HEADER & NAVIGATION ────────────────────────── */
.site-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    max-width: 1240px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    transition: transform 0.2s ease;
}

.logo:hover {
    transform: scale(1.02);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

nav ul a {
    padding: 10px 16px;
    border-radius: 10px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

nav ul a:hover, nav ul a.active {
    background: var(--primary-light);
    color: var(--primary);
}

.has-dropdown {
    position: relative;
}

.has-dropdown:hover .dropdown {
    display: grid;
    grid-template-columns: 1fr 1fr;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: -20px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.15);
    border: 1px solid var(--border);
    min-width: 360px;
    padding: 12px;
    z-index: 2000;
    list-style: none;
    gap: 4px;
    transition: all 0.25s ease;
}

.dropdown li {
    margin: 0;
}

.dropdown a {
    display: flex;
    align-items: center;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text);
}

.dropdown a:hover {
    background: var(--primary-light);
    color: var(--primary);
    transform: translateX(3px);
}

.nav-cta {
    background: var(--primary-gradient) !important;
    color: #ffffff !important;
    border-radius: 10px !important;
    padding: 10px 20px !important;
    box-shadow: 0 4px 14px rgba(29, 78, 216, 0.3);
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(29, 78, 216, 0.4) !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    width: 24px;
    height: 2.5px;
    background: var(--text);
    border-radius: 2px;
    transition: 0.3s;
}

/* ── HERO SECTION ─────────────────────────────── */
.hero {
    background: var(--accent-gradient);
    color: #ffffff;
    padding: 100px 20px 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.hero h1 {
    font-size: 3.4rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.hero h1 span {
    background: linear-gradient(135deg, #60a5fa 0%, #93c5fd 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 620px;
    margin: 0 auto 36px;
    font-weight: 400;
    color: #e2e8f0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary {
    background: #ffffff;
    color: var(--primary);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background: #ffffff;
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.hero .btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff !important;
    border: 1.5px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(8px);
}

.hero .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-secondary {
    background: #f1f5f9;
    color: #0f172a !important;
    border: 1.5px solid #cbd5e1;
    box-shadow: 0 2px 6px rgba(0,0,0,0.04);
}

.btn-secondary:hover {
    background: #e2e8f0;
    color: var(--primary) !important;
    border-color: var(--primary);
    transform: translateY(-1px);
}


.btn-blue {
    background: var(--primary-gradient);
    color: #ffffff;
    box-shadow: 0 8px 20px rgba(29, 78, 216, 0.35);
}

.btn-blue:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(29, 78, 216, 0.5);
}

.hero-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 48px;
    justify-content: center;
    margin-top: 56px;
    flex-wrap: wrap;
}

.hero-stat {
    text-align: center;
    background: rgba(255, 255, 255, 0.06);
    padding: 16px 28px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.hero-stat strong {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    color: #ffffff;
}

.hero-stat span {
    font-size: 0.88rem;
    color: #94a3b8;
    font-weight: 500;
}

/* ── QUICK CALCULATOR WIDGET ────────────────────── */
.quick-calc {
    background: #ffffff;
    border-radius: 20px;
    padding: 40px;
    max-width: 760px;
    margin: -60px auto 0;
    position: relative;
    z-index: 10;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(226, 232, 240, 0.8);
}

.quick-calc h2 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 10px;
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.88rem;
    font-weight: 700;
    color: #334155;
    letter-spacing: -0.01em;
}

.form-group input, .form-group select, .form-group textarea {
    padding: 14px 16px;
    border: 1.5px solid var(--border);
    border-radius: 12px;
    font-size: 1rem;
    font-family: var(--font);
    background: #f8fafc;
    color: var(--dark);
    font-weight: 500;
    transition: all 0.2s ease;
    width: 100%;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: #ffffff;
    box-shadow: 0 0 0 4px rgba(29, 78, 216, 0.12);
}

.calc-result {
    margin-top: 24px;
    padding: 24px;
    background: var(--accent-gradient);
    border-radius: 16px;
    color: #ffffff;
    display: none;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
}

.calc-result.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    text-align: center;
}

.result-item strong {
    display: block;
    font-size: 1.7rem;
    font-weight: 800;
    color: #60a5fa;
}

.result-item span {
    font-size: 0.82rem;
    color: #cbd5e1;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ── SECTIONS & TILES ───────────────────────────── */
.section {
    padding: 90px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 56px;
}

.section-title h2 {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.section-title p {
    color: var(--muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.section-gray {
    background: #f1f5f9;
}

/* ── FEATURE & CALCULATOR CARDS ─────────────────── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 28px;
}

.feature-card {
    background: var(--card-gradient);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(226, 232, 240, 0.9);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-light);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(29, 78, 216, 0.1);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--dark);
}

.feature-card p {
    color: var(--muted);
    font-size: 0.94rem;
    line-height: 1.6;
    margin-bottom: 24px;
    flex-grow: 1;
}

.feature-card a {
    font-weight: 700;
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
}

.feature-card a:hover {
    gap: 10px;
}

/* ── CALCULATOR PAGE & LAYOUT ───────────────────── */
.page-hero {
    background: var(--accent-gradient);
    color: #ffffff;
    padding: 60px 20px;
    text-align: center;
    position: relative;
}

.page-hero h1 {
    font-size: 2.6rem;
    font-weight: 800;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}

.page-hero p {
    opacity: 0.9;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
    color: #e2e8f0;
}

.calc-page {
    padding: 60px 0;
}

.calc-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 36px;
    align-items: start;
}

.card {
    background: #ffffff;
    border-radius: var(--radius);
    padding: 36px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.card h2, .card h3 {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 24px;
    letter-spacing: -0.01em;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.result-box {
    background: var(--primary-gradient);
    border-radius: 16px;
    padding: 28px;
    text-align: center;
    margin-bottom: 20px;
    color: #ffffff;
    box-shadow: 0 10px 25px rgba(29, 78, 216, 0.25);
}

.result-box .amount {
    font-size: 2.6rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.2;
}

.result-box .label {
    font-size: 0.9rem;
    color: #dbeafe;
    font-weight: 600;
    margin-top: 6px;
}

.result-summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.res-item {
    background: #f8fafc;
    border: 1.5px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    text-align: center;
}

.res-item strong {
    display: block;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--dark);
    margin-top: 4px;
}

.res-item span {
    font-size: 0.82rem;
    color: var(--muted);
    font-weight: 600;
    text-transform: uppercase;
}

/* ── AMORTIZATION TABLE ────────────────────────── */
.table-wrap {
    overflow-x: auto;
    margin-top: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
}

thead th {
    background: var(--dark);
    color: #ffffff;
    padding: 14px 18px;
    text-align: left;
    font-weight: 700;
}

tbody tr:nth-child(even) {
    background: #f8fafc;
}

tbody tr:hover {
    background: var(--primary-light);
}

tbody td {
    padding: 12px 18px;
    border-bottom: 1px solid var(--border);
}

/* ── BLOG & POSTS ──────────────────────────────── */
.blog-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 36px;
}

.blog-grid {
    display: grid;
    gap: 28px;
}

.post-card {
    background: #ffffff;
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.post-meta {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.cat-badge {
    background: var(--primary-light);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 30px;
    font-size: 0.78rem;
    font-weight: 700;
}

.post-date {
    color: var(--muted);
    font-size: 0.85rem;
    font-weight: 500;
}

.post-card h2, .post-card h3 {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 12px;
    line-height: 1.4;
}

.post-card h2 a, .post-card h3 a {
    color: var(--dark);
}

.post-card h2 a:hover, .post-card h3 a:hover {
    color: var(--primary);
}

.post-card p {
    color: var(--muted);
    font-size: 0.96rem;
    margin-bottom: 20px;
    line-height: 1.7;
}

.sidebar .card {
    margin-bottom: 28px;
}

.sidebar h3 {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--dark);
}

.sidebar ul {
    list-style: none;
}

.sidebar ul li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

.sidebar ul li a {
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 500;
}

.sidebar ul li a:hover {
    color: var(--primary);
}

/* ── SINGLE POST PAGE ──────────────────────────── */
.post-content h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--dark);
    margin: 36px 0 16px;
    letter-spacing: -0.01em;
}

.post-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark);
    margin: 24px 0 12px;
}

.post-content p {
    margin-bottom: 20px;
    color: var(--text);
    line-height: 1.85;
    font-size: 1.05rem;
}

.post-content ul, .post-content ol {
    margin: 16px 0 24px 28px;
}

.post-content li {
    margin-bottom: 10px;
    color: var(--text);
    font-size: 1.02rem;
    line-height: 1.7;
}

.post-content strong {
    color: var(--dark);
    font-weight: 700;
}

/* ── FOOTER ────────────────────────────────────── */
.site-footer {
    background: var(--dark);
    color: #94a3b8;
    padding: 70px 0 30px;
    border-top: 1px solid #1e293b;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.94rem;
    line-height: 1.75;
    color: #94a3b8;
}

.footer-col h4 {
    color: #ffffff;
    font-weight: 700;
    margin-bottom: 20px;
    font-size: 1rem;
}

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

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul a {
    color: #94a3b8;
    font-size: 0.92rem;
    transition: all 0.2s ease;
}

.footer-col ul a:hover {
    color: #ffffff;
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid #1e293b;
    padding-top: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-bottom p {
    font-size: 0.88rem;
    color: #64748b;
}

/* ── TOOL NAVIGATION BAR (ALL CALCULATORS) ──────── */
.tool-nav-container {
    margin-top: -32px;
    position: relative;
    z-index: 30;
    margin-bottom: 24px;
}

.tool-nav-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 12px 16px;
    box-shadow: 0 12px 36px -10px rgba(15, 23, 42, 0.12);
    border: 1.5px solid var(--border);
}

.tool-nav-scroll {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
}

.tool-nav-scroll::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

.tool-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 700;
    white-space: nowrap;
    color: var(--text) !important;
    background: #f8fafc;
    border: 1px solid var(--border);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
}

.tool-nav-btn:hover {
    background: var(--primary-light);
    color: var(--primary) !important;
    border-color: var(--primary);
    transform: translateY(-1px);
}

.tool-nav-btn.active {
    background: var(--primary-gradient) !important;
    color: #ffffff !important;
    border-color: transparent !important;
    box-shadow: 0 4px 14px rgba(29, 78, 216, 0.35);
}

/* ── RESPONSIVE STYLING ────────────────────────── */
@media (max-width: 960px) {
    .calc-layout, .blog-layout, .contact-grid {
        grid-template-columns: 1fr;
    }

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

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

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

    .tool-nav-container {
        margin-top: -24px;
        padding: 0 16px;
    }

    .tool-nav-card {
        padding: 10px 12px;
    }

    .tool-nav-btn {
        padding: 8px 14px;
        font-size: 0.85rem;
    }
}


@media (max-width: 640px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .page-hero h1 {
        font-size: 1.8rem;
    }

    .page-hero p {
        font-size: 0.95rem;
    }

    .card {
        padding: 20px;
        border-radius: 12px;
    }

    nav ul {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
        border-top: 1px solid var(--border);
    }

    nav ul.open {
        display: flex;
    }

    .dropdown {
        position: static;
        display: block;
        min-width: 100%;
        box-shadow: none;
        border: none;
        padding: 0;
        grid-template-columns: 1fr;
    }

    .hamburger {
        display: flex;
    }

    .quick-calc {
        margin-top: -40px;
        padding: 20px;
    }

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

    .table-wrap {
        margin-top: 16px;
    }

    table {
        font-size: 0.82rem;
    }

    thead th, tbody td {
        padding: 8px 10px;
    }
}