/* ===== Custom Properties ===== */
:root {
    --color-primary: #1a2332;
    --color-primary-light: #2a3a4f;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-accent-light: #dbeafe;
    --color-text: #1f2937;
    --color-text-muted: #6b7280;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-dark: #0f172a;
    --color-border: #e5e7eb;
    --color-success: #059669;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
    --max-width: 1120px;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Utilities ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 5rem 0; }
.section-alt { background: var(--color-bg-alt); }
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ===== Typography ===== */
h1, h2, h3, h4 { color: var(--color-primary); line-height: 1.2; font-weight: 700; }
h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); margin-bottom: 1rem; }
h3 { font-size: clamp(1.125rem, 2.5vw, 1.5rem); margin-bottom: 0.75rem; }
p + p { margin-top: 1rem; }

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 640px;
    margin: 0 auto 3rem;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}
.btn-primary:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); text-decoration: none; }

.btn-secondary {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}
.btn-secondary:hover { background: var(--color-accent); color: #fff; text-decoration: none; }

.btn-large { padding: 1rem 2.25rem; font-size: 1.125rem; }

/* ===== Header / Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
}

.nav-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.nav-brand:hover { text-decoration: none; }

.nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav-links a {
    color: var(--color-text);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--color-accent); text-decoration: none; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    margin: 5px 0;
    transition: 0.3s;
}

/* ===== Hero ===== */
.hero {
    padding: 6rem 0 5rem;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.hero-content { max-width: 720px; }

.hero h1 { margin-bottom: 1.25rem; }

.hero-tagline {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    line-height: 1.5;
}

.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero-badge {
    display: inline-block;
    background: var(--color-accent-light);
    color: var(--color-accent);
    padding: 0.375rem 0.875rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

/* ===== Feature / Value Cards ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--color-accent-light);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    font-size: 1.5rem;
}

/* ===== How It Works ===== */
.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
    counter-reset: step;
}

.step { position: relative; padding-left: 3.5rem; counter-increment: step; }
.step::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--color-accent);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
}

.step h3 { margin-bottom: 0.5rem; }

/* ===== Pricing ===== */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    align-items: start;
}

.pricing-card {
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    text-align: center;
    position: relative;
    box-shadow: var(--shadow);
}

.pricing-card.featured {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: scale(1.03);
}

.pricing-badge {
    position: absolute;
    top: -0.875rem;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: #fff;
    padding: 0.25rem 1rem;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 600;
}

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

.pricing-amount {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
    margin: 1rem 0 0.25rem;
}

.pricing-period {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9375rem;
    padding-left: 1.5rem;
    position: relative;
}

.pricing-features li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

.pricing-card .btn { width: 100%; text-align: center; }

/* ===== Blog ===== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.blog-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: box-shadow 0.2s;
}
.blog-card:hover { box-shadow: var(--shadow-md); }

.blog-card-body { padding: 1.5rem; }
.blog-card-meta {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}
.blog-card h3 { margin-bottom: 0.5rem; }
.blog-card h3 a { color: var(--color-primary); }
.blog-card h3 a:hover { color: var(--color-accent); text-decoration: none; }
.blog-card p { font-size: 0.9375rem; color: var(--color-text-muted); }

.blog-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1rem; }
.blog-tag {
    background: var(--color-bg-alt);
    color: var(--color-text-muted);
    padding: 0.125rem 0.625rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* ===== Blog Post ===== */
.post-header { padding: 4rem 0 2rem; }
.post-header h1 { margin-bottom: 1rem; }
.post-meta {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

.post-content {
    max-width: 720px;
    margin: 0 auto;
    padding-bottom: 4rem;
    font-size: 1.0625rem;
    line-height: 1.75;
}

.post-content h2 { margin-top: 2.5rem; margin-bottom: 1rem; }
.post-content h3 { margin-top: 2rem; margin-bottom: 0.75rem; }
.post-content p { margin-bottom: 1.25rem; }
.post-content ul, .post-content ol { margin-bottom: 1.25rem; padding-left: 1.5rem; }
.post-content li { margin-bottom: 0.5rem; }
.post-content blockquote {
    border-left: 4px solid var(--color-accent);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: var(--color-bg-alt);
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--color-text-muted);
    font-style: italic;
}
.post-content code {
    background: var(--color-bg-alt);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.875em;
}
.post-content pre {
    background: var(--color-bg-dark);
    color: #e2e8f0;
    padding: 1.25rem;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 1.5rem 0;
}
.post-content pre code { background: none; padding: 0; color: inherit; }

/* ===== Forms ===== */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.375rem;
    color: var(--color-primary);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: var(--font-sans);
    transition: border-color 0.2s;
    background: var(--color-bg);
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.form-inline {
    display: flex;
    gap: 0.75rem;
}
.form-inline input { flex: 1; }

.form-hint { font-size: 0.8125rem; color: var(--color-text-muted); margin-top: 0.25rem; }

.field-validation-error { color: #dc2626; font-size: 0.8125rem; margin-top: 0.25rem; display: block; }
.input-validation-error { border-color: #dc2626 !important; }

.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    font-size: 0.9375rem;
}
.alert-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* ===== Newsletter ===== */
.newsletter {
    background: var(--color-primary);
    color: #fff;
    padding: 3rem 0;
}
.newsletter h2 { color: #fff; margin-bottom: 0.5rem; }
.newsletter p { color: rgba(255,255,255,0.7); margin-bottom: 1.5rem; }
.newsletter .form-inline input {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
    color: #fff;
}
.newsletter .form-inline input::placeholder { color: rgba(255,255,255,0.5); }
.newsletter .form-inline input:focus { border-color: var(--color-accent); }

/* ===== CTA Section ===== */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: #fff;
    padding: 5rem 0;
    text-align: center;
}
.cta-section h2 { color: #fff; margin-bottom: 1rem; }
.cta-section p { color: rgba(255,255,255,0.8); font-size: 1.125rem; max-width: 600px; margin: 0 auto 2rem; }

/* ===== Footer ===== */
.site-footer {
    background: var(--color-bg-dark);
    color: rgba(255,255,255,0.6);
    padding: 3rem 0 2rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}
.footer-brand { font-size: 1.125rem; font-weight: 700; color: #fff; margin-bottom: 0.75rem; }
.footer-desc { font-size: 0.875rem; line-height: 1.6; }

.site-footer h4 { color: #fff; font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 1rem; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a { color: rgba(255,255,255,0.6); font-size: 0.875rem; }
.footer-links a:hover { color: #fff; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.5rem;
    font-size: 0.8125rem;
    text-align: center;
}

/* ===== Page Header ===== */
.page-header {
    background: var(--color-bg-alt);
    padding: 4rem 0 3rem;
    border-bottom: 1px solid var(--color-border);
}
.page-header h1 { margin-bottom: 0.75rem; }
.page-header p { font-size: 1.125rem; color: var(--color-text-muted); max-width: 600px; }

/* ===== Services Page ===== */
.service-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    padding: 3rem 0;
}
.service-detail:nth-child(even) { direction: rtl; }
.service-detail:nth-child(even) > * { direction: ltr; }

.service-list { list-style: none; }
.service-list li {
    padding: 0.5rem 0 0.5rem 1.5rem;
    position: relative;
    font-size: 0.9375rem;
}
.service-list li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

/* ===== FAQ ===== */
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item summary {
    padding: 1.25rem 0;
    font-weight: 600;
    cursor: pointer;
    font-size: 1.0625rem;
    list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::before {
    content: "+";
    display: inline-block;
    width: 1.5rem;
    font-size: 1.25rem;
    color: var(--color-accent);
    font-weight: 700;
}
.faq-item[open] summary::before { content: "\2212"; }
.faq-item .faq-answer { padding: 0 0 1.25rem 1.5rem; color: var(--color-text-muted); line-height: 1.6; }

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}
.about-photo {
    aspect-ratio: 1;
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}
.contact-info h3 { margin-bottom: 1rem; }
.contact-info p { margin-bottom: 1.5rem; color: var(--color-text-muted); }

/* ===== Payment Page ===== */
.detail-list {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 0.5rem 1rem;
}

.detail-list dt {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.detail-list dd {
    margin: 0;
    font-size: 0.9375rem;
}

.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 600;
    white-space: nowrap;
}

.status-complete {
    background: #ecfdf5;
    color: #065f46;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 4rem;
        left: 0;
        right: 0;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        padding: 1rem 1.5rem;
        gap: 0;
    }
    .nav-links.active li { padding: 0.75rem 0; }
    .nav-toggle { display: block; }

    .hero { padding: 3rem 0; }
    .section { padding: 3rem 0; }

    .pricing-card.featured { transform: none; }

    .service-detail,
    .service-detail:nth-child(even) {
        grid-template-columns: 1fr;
        direction: ltr;
    }

    .about-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }

    .form-inline { flex-direction: column; }
}