/* ============================================================
   All Home Services Calculator — Main Stylesheet
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
    --color-primary:     #2563EB;
    --color-primary-dk:  #1D4ED8;
    --color-secondary:   #F59E0B;
    --color-secondary-dk:#D97706;
    --color-bg:          #F8FAFC;
    --color-card:        #FFFFFF;
    --color-text:        #0F172A;
    --color-muted:       #64748B;
    --color-border:      #E2E8F0;
    --color-success:     #10B981;
    --color-error:       #EF4444;

    --radius-sm:  6px;
    --radius-md:  10px;
    --radius-lg:  14px;
    --radius-xl:  20px;

    --shadow-sm:  0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md:  0 4px 16px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.04);
    --shadow-lg:  0 12px 40px rgba(0,0,0,.10), 0 4px 12px rgba(0,0,0,.06);
    --shadow-blue: 0 4px 20px rgba(37,99,235,.25);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    --transition: .18s ease;
    --max-width:  1200px;
    --container-px: clamp(1rem, 5vw, 2rem);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dk); }
ul, ol { list-style: none; }

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-text);
    letter-spacing: -.02em;
}
h1 { font-size: clamp(2rem,   5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.5rem);  }
h4 { font-size: 1.125rem; }
p  { color: var(--color-muted); margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* ── Layout Helpers ─────────────────────────────────────────── */
.container {
    max-width: var(--max-width);
    margin-inline: auto;
    padding-inline: var(--container-px);
}

.section { padding-block: clamp(3rem, 8vw, 6rem); }
.section--sm { padding-block: clamp(2rem, 5vw, 3.5rem); }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; }

.flex       { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; }
.flex-col   { display: flex; flex-direction: column; }
.gap-1  { gap: .5rem;  }
.gap-2  { gap: 1rem;   }
.gap-3  { gap: 1.5rem; }
.gap-4  { gap: 2rem;   }

.text-center  { text-align: center; }
.text-muted   { color: var(--color-muted); }
.text-primary { color: var(--color-primary); }
.font-semibold{ font-weight: 600; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ── Card ───────────────────────────────────────────────────── */
.card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}
.card__body { padding: 1.75rem; }
.card__header { padding: 1.75rem 1.75rem 0; }
.card__footer { padding: 1.25rem 1.75rem; border-top: 1px solid var(--color-border); }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-family: var(--font-sans);
    font-size: .9375rem;
    font-weight: 600;
    line-height: 1;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    padding: .75rem 1.5rem;
    cursor: pointer;
    transition: background var(--transition), color var(--transition),
                border-color var(--transition), box-shadow var(--transition),
                transform var(--transition);
    white-space: nowrap;
    text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: var(--shadow-blue);
}
.btn--primary:hover { background: var(--color-primary-dk); color: #fff; box-shadow: 0 6px 24px rgba(37,99,235,.35); }

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

.btn--outline {
    background: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}
.btn--outline:hover { background: var(--color-primary); color: #fff; }

.btn--ghost {
    background: transparent;
    color: var(--color-primary);
}
.btn--ghost:hover { background: rgba(37,99,235,.07); }

.btn--sm  { font-size: .875rem; padding: .5rem 1.125rem; }
.btn--lg  { font-size: 1.0625rem; padding: .9rem 2rem; border-radius: var(--radius-lg); }
.btn--full{ width: 100%; justify-content: center; }

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    padding: .3rem .75rem;
    border-radius: 999px;
}
.badge--primary { background: rgba(37,99,235,.1); color: var(--color-primary); }
.badge--secondary { background: rgba(245,158,11,.12); color: #92400E; }
.badge--success { background: rgba(16,185,129,.1); color: #065F46; }

/* ── Section Heading ────────────────────────────────────────── */
.section-heading { margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.section-heading .badge { margin-bottom: .875rem; }
.section-heading h2 { margin-bottom: .75rem; }
.section-heading p { font-size: 1.0625rem; max-width: 56ch; }
.section-heading.text-center p { margin-inline: auto; }

/* ── Header ─────────────────────────────────────────────────── */
#site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition);
}
#site-header.scrolled { box-shadow: var(--shadow-md); }

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: 2rem;
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: .625rem;
    text-decoration: none;
    flex-shrink: 0;
}
.site-logo__icon {
    width: 38px;
    height: 38px;
    background: var(--color-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}
.site-logo__icon svg { width: 22px; height: 22px; fill: #fff; }
.site-logo__text { font-size: 1.0625rem; font-weight: 700; color: var(--color-text); line-height: 1.2; }
.site-logo__text span { color: var(--color-primary); }
.site-logo__sub { font-size: .625rem; font-weight: 500; color: var(--color-muted); letter-spacing: .08em; text-transform: uppercase; display: block; }

/* Primary nav */
.primary-nav { display: flex; align-items: center; gap: .25rem; }
.primary-nav a {
    font-size: .9375rem;
    font-weight: 500;
    color: var(--color-text);
    padding: .5rem .875rem;
    border-radius: var(--radius-sm);
    transition: background var(--transition), color var(--transition);
    position: relative;
}
.primary-nav a:hover,
.primary-nav a.current-menu-item { color: var(--color-primary); background: rgba(37,99,235,.06); }

.header__actions { display: flex; align-items: center; gap: .875rem; }

/* Hamburger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: .5rem;
    border-radius: var(--radius-sm);
    flex-direction: column;
    gap: 5px;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.mobile-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem var(--container-px) 1.5rem;
    box-shadow: var(--shadow-lg);
}
.mobile-nav.open { display: block; }
.mobile-nav a {
    display: block;
    padding: .7rem 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
}
.mobile-nav a:hover { color: var(--color-primary); }
.mobile-nav .btn { margin-top: 1rem; }

/* ── Hero ────────────────────────────────────────────────────── */
.hero {
    background: linear-gradient(135deg, #EFF6FF 0%, #F8FAFC 50%, #FFF7ED 100%);
    padding-block: clamp(4rem, 10vw, 8rem);
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%232563EB' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
}
.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.hero__content { position: relative; z-index: 1; }
.hero__eyebrow { display: flex; align-items: center; gap: .75rem; margin-bottom: 1.5rem; }
.hero__eyebrow .dot { width: 8px; height: 8px; background: var(--color-secondary); border-radius: 50%; }
.hero__eyebrow span { font-size: .875rem; font-weight: 600; color: var(--color-primary); text-transform: uppercase; letter-spacing: .08em; }
.hero__title { margin-bottom: 1.25rem; }
.hero__title .highlight {
    background: linear-gradient(135deg, var(--color-primary), #7C3AED);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero__desc { font-size: 1.125rem; margin-bottom: 2rem; max-width: 46ch; }
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.hero__stats { display: flex; gap: 2rem; flex-wrap: wrap; }
.hero__stat strong { display: block; font-size: 1.5rem; font-weight: 700; color: var(--color-text); }
.hero__stat span { font-size: .8125rem; color: var(--color-muted); }

.hero__visual { position: relative; z-index: 1; }
.hero-card-stack {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.hero-mini-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}
.hero-mini-card__icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: .875rem;
    font-size: 1.25rem;
}
.hero-mini-card__title { font-size: .9375rem; font-weight: 600; margin-bottom: .25rem; }
.hero-mini-card__value { font-size: 1.25rem; font-weight: 700; color: var(--color-primary); }
.hero-mini-card--featured {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 1rem;
}
.hero-mini-card--featured .hero-mini-card__icon { margin-bottom: 0; flex-shrink: 0; }

/* ── Calculator Card ─────────────────────────────────────────── */
.calculator-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow var(--transition), transform var(--transition);
}
.calculator-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }

.calculator-card__top {
    height: 8px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}
.calculator-card__body { padding: 1.75rem; flex: 1; }
.calculator-card__icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: rgba(37,99,235,.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}
.calculator-card__category {
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--color-primary);
    margin-bottom: .5rem;
}
.calculator-card__title { font-size: 1.125rem; font-weight: 700; margin-bottom: .625rem; }
.calculator-card__desc { font-size: .9rem; color: var(--color-muted); line-height: 1.6; margin-bottom: 0; }
.calculator-card__footer {
    padding: 1.125rem 1.75rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.calculator-card__meta { font-size: .8125rem; color: var(--color-muted); }
.calculator-card__link {
    font-size: .875rem;
    font-weight: 600;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: .3rem;
    transition: gap var(--transition);
}
.calculator-card__link:hover { gap: .55rem; color: var(--color-primary-dk); }

/* ── Calculator Form ─────────────────────────────────────────── */
.calc-form { display: flex; flex-direction: column; gap: 1.5rem; }

.form-group { display: flex; flex-direction: column; gap: .5rem; }
.form-group label {
    font-size: .9375rem;
    font-weight: 600;
    color: var(--color-text);
}
.form-group .hint { font-size: .8125rem; color: var(--color-muted); }

.form-input,
.form-select,
.form-textarea {
    font-family: var(--font-sans);
    font-size: .9375rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: .75rem 1rem;
    width: 100%;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(37,99,235,.12);
    background: #fff;
}
.form-input::placeholder,
.form-textarea::placeholder { color: #94A3B8; }
.form-select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right .875rem center; padding-right: 2.5rem; }

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

.input-prefix { position: relative; }
.input-prefix__symbol {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-weight: 600;
    color: var(--color-muted);
    pointer-events: none;
}
.input-prefix .form-input { padding-left: 2rem; }

/* ── Results Panel ───────────────────────────────────────────── */
.results-panel {
    background: linear-gradient(135deg, #EFF6FF, #F0FDF4);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: none;
}
.results-panel.visible { display: block; }
.results-panel__title { font-size: 1rem; font-weight: 600; color: var(--color-muted); margin-bottom: 1.25rem; text-transform: uppercase; letter-spacing: .06em; }
.results-panel__main { font-size: clamp(2rem, 5vw, 3rem); font-weight: 800; color: var(--color-primary); margin-bottom: 1.25rem; }
.results-panel__breakdown { display: grid; gap: .625rem; }
.results-panel__item { display: flex; justify-content: space-between; align-items: center; padding: .625rem 0; border-bottom: 1px solid rgba(37,99,235,.12); }
.results-panel__item:last-child { border-bottom: none; }
.results-panel__item-label { color: var(--color-muted); font-size: .9375rem; }
.results-panel__item-value { font-weight: 600; color: var(--color-text); }
.results-panel__disclaimer { font-size: .8125rem; color: var(--color-muted); margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--color-border); margin-bottom: 0; }

/* ── Categories section ──────────────────────────────────────── */
.category-chip {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .5rem 1.125rem;
    border-radius: 999px;
    background: var(--color-card);
    border: 2px solid var(--color-border);
    font-size: .875rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}
.category-chip:hover,
.category-chip.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}
.category-chips { display: flex; gap: .75rem; flex-wrap: wrap; margin-bottom: 2.5rem; }

/* ── Features / How-it-works ─────────────────────────────────── */
.feature-item { display: flex; gap: 1.25rem; }
.feature-item__icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: rgba(37,99,235,.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.375rem;
    flex-shrink: 0;
}
.feature-item__title { font-size: 1.0625rem; font-weight: 700; margin-bottom: .375rem; }
.feature-item__desc { font-size: .9375rem; color: var(--color-muted); margin-bottom: 0; }

.step-number {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

/* ── Testimonials ────────────────────────────────────────────── */
.testimonial-card {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: 2rem;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}
.testimonial-card__stars { color: var(--color-secondary); font-size: 1rem; margin-bottom: .875rem; letter-spacing: .1em; }
.testimonial-card__body { font-size: 1rem; color: var(--color-text); line-height: 1.7; margin-bottom: 1.25rem; font-style: italic; }
.testimonial-card__author { display: flex; align-items: center; gap: .875rem; }
.testimonial-card__avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.testimonial-card__name { font-weight: 600; font-size: .9375rem; }
.testimonial-card__role { font-size: .8125rem; color: var(--color-muted); }

/* ── CTA Banner ──────────────────────────────────────────────── */
.cta-banner {
    background: linear-gradient(135deg, var(--color-primary) 0%, #1E40AF 100%);
    border-radius: var(--radius-xl);
    padding: clamp(2.5rem, 6vw, 4.5rem);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,.05);
    border-radius: 50%;
}
.cta-banner h2 { color: #fff; margin-bottom: 1rem; }
.cta-banner p { color: rgba(255,255,255,.8); font-size: 1.0625rem; margin-bottom: 2rem; max-width: 50ch; }
.cta-banner .btn--white {
    background: #fff;
    color: var(--color-primary);
    font-weight: 700;
}
.cta-banner .btn--white:hover { background: #F1F5F9; }
.cta-banner .btn--outline-white {
    background: transparent;
    border: 2px solid rgba(255,255,255,.5);
    color: #fff;
}
.cta-banner .btn--outline-white:hover { background: rgba(255,255,255,.1); border-color: #fff; }

/* ── Footer ──────────────────────────────────────────────────── */
#site-footer {
    background: #0F172A;
    color: rgba(255,255,255,.75);
    padding-top: clamp(3rem, 8vw, 5rem);
}
.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer__brand .site-logo__text { color: #fff; }
.footer__brand .site-logo__sub { color: rgba(255,255,255,.4); }
.footer__tagline { font-size: .9375rem; color: rgba(255,255,255,.55); line-height: 1.65; margin-top: 1rem; margin-bottom: 1.5rem; }
.footer__social { display: flex; gap: .75rem; }
.footer__social-link {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,.08);
    color: rgba(255,255,255,.6);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    text-decoration: none;
}
.footer__social-link:hover { background: var(--color-primary); color: #fff; }

.footer__col-title { font-size: .8125rem; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: rgba(255,255,255,.4); margin-bottom: 1.25rem; }
.footer__nav { display: flex; flex-direction: column; gap: .625rem; }
.footer__nav a { font-size: .9375rem; color: rgba(255,255,255,.65); transition: color var(--transition); }
.footer__nav a:hover { color: #fff; }

.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 1.5rem;
    gap: 1rem;
    flex-wrap: wrap;
}
.footer__copyright { font-size: .875rem; color: rgba(255,255,255,.4); }
.footer__links { display: flex; gap: 1.5rem; }
.footer__links a { font-size: .875rem; color: rgba(255,255,255,.4); transition: color var(--transition); }
.footer__links a:hover { color: rgba(255,255,255,.8); }

/* ── Page Hero (inner pages) ─────────────────────────────────── */
.page-hero {
    background: linear-gradient(135deg, #EFF6FF 0%, #F8FAFC 100%);
    padding-block: clamp(3rem, 7vw, 5rem);
    border-bottom: 1px solid var(--color-border);
}
.page-hero__breadcrumb { display: flex; align-items: center; gap: .5rem; font-size: .875rem; color: var(--color-muted); margin-bottom: 1rem; flex-wrap: wrap; }
.page-hero__breadcrumb a { color: var(--color-primary); }
.page-hero__breadcrumb span { color: var(--color-border); }

/* ── Single Calculator Page ──────────────────────────────────── */
.calculator-page { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.calculator-page__grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 2.5rem;
    align-items: start;
}
.calculator-page__sidebar { position: sticky; top: 90px; }
.calculator-page__meta { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.75rem; flex-wrap: wrap; }

/* ── Blog ────────────────────────────────────────────────────── */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 1.75rem; }
.post-card { display: flex; flex-direction: column; background: var(--color-card); border-radius: var(--radius-lg); border: 1px solid var(--color-border); overflow: hidden; transition: box-shadow var(--transition), transform var(--transition); }
.post-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.post-card__thumb { aspect-ratio: 16/9; overflow: hidden; }
.post-card__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s ease; }
.post-card:hover .post-card__thumb img { transform: scale(1.04); }
.post-card__body { padding: 1.5rem; flex: 1; }
.post-card__cat { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--color-primary); margin-bottom: .625rem; }
.post-card__title { font-size: 1.125rem; font-weight: 700; color: var(--color-text); margin-bottom: .625rem; line-height: 1.4; }
.post-card__title a { color: inherit; }
.post-card__title a:hover { color: var(--color-primary); }
.post-card__excerpt { font-size: .9rem; color: var(--color-muted); line-height: 1.6; margin-bottom: 0; }
.post-card__footer { padding: 1rem 1.5rem; border-top: 1px solid var(--color-border); display: flex; align-items: center; justify-content: space-between; }
.post-card__meta { font-size: .8125rem; color: var(--color-muted); }
.post-card__read { font-size: .875rem; font-weight: 600; color: var(--color-primary); }

/* ── Article content ─────────────────────────────────────────── */
.entry-content {
    max-width: 72ch;
    font-size: 1.0625rem;
    line-height: 1.8;
}
.entry-content h2, .entry-content h3 { margin-top: 2.25rem; margin-bottom: .875rem; }
.entry-content p { color: var(--color-text); margin-bottom: 1.375rem; }
.entry-content ul, .entry-content ol { padding-left: 1.5rem; margin-bottom: 1.375rem; color: var(--color-text); }
.entry-content ul { list-style: disc; }
.entry-content ol { list-style: decimal; }
.entry-content li { margin-bottom: .5rem; }
.entry-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding: 1rem 1.5rem;
    background: rgba(37,99,235,.05);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin-block: 2rem;
    font-style: italic;
}
.entry-content code {
    background: #F1F5F9;
    padding: .15em .45em;
    border-radius: 4px;
    font-size: .9em;
    font-family: 'Fira Mono', monospace;
}
.entry-content pre {
    background: #1E293B;
    color: #E2E8F0;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-block: 1.5rem;
}
.entry-content pre code { background: none; padding: 0; color: inherit; }
.entry-content img { border-radius: var(--radius-md); margin-block: 1.5rem; }
.entry-content a { text-decoration: underline; }
.entry-content table { width: 100%; border-collapse: collapse; margin-block: 1.5rem; }
.entry-content th, .entry-content td { padding: .75rem 1rem; border: 1px solid var(--color-border); text-align: left; }
.entry-content th { background: var(--color-bg); font-weight: 600; }

/* ── 404 ─────────────────────────────────────────────────────── */
.page-404 {
    min-height: 70vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem;
}
.page-404__code { font-size: clamp(6rem, 20vw, 12rem); font-weight: 800; line-height: 1; background: linear-gradient(135deg, var(--color-primary), var(--color-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.page-404__title { font-size: clamp(1.5rem, 4vw, 2.25rem); margin-bottom: 1rem; }
.page-404__desc { max-width: 44ch; margin-inline: auto; margin-bottom: 2rem; font-size: 1.0625rem; }

/* ── Pagination ──────────────────────────────────────────────── */
.pagination { display: flex; gap: .5rem; align-items: center; justify-content: center; margin-top: 3rem; flex-wrap: wrap; }
.pagination a, .pagination span {
    width: 42px; height: 42px;
    border-radius: var(--radius-md);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    display: flex; align-items: center; justify-content: center;
    font-size: .9375rem; font-weight: 600;
    color: var(--color-text);
    transition: all var(--transition);
    text-decoration: none;
}
.pagination a:hover { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.pagination .current { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }

/* ── Widget ──────────────────────────────────────────────────── */
.widget-box {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}
.widget-box__title { font-size: 1rem; font-weight: 700; margin-bottom: 1.25rem; padding-bottom: .875rem; border-bottom: 2px solid var(--color-primary); }
.widget-box__list { display: flex; flex-direction: column; gap: .625rem; }
.widget-box__list a { font-size: .9375rem; color: var(--color-text); display: flex; align-items: center; gap: .5rem; padding: .5rem; border-radius: var(--radius-sm); transition: all var(--transition); }
.widget-box__list a::before { content: '→'; color: var(--color-primary); font-size: .875rem; }
.widget-box__list a:hover { background: rgba(37,99,235,.06); color: var(--color-primary); }

/* ── Notice bar ──────────────────────────────────────────────── */
.notice-bar {
    background: var(--color-primary);
    color: #fff;
    text-align: center;
    padding: .625rem var(--container-px);
    font-size: .875rem;
    font-weight: 500;
}
.notice-bar a { color: var(--color-secondary); font-weight: 700; }

/* ── Search ──────────────────────────────────────────────────── */
.search-form {
    display: flex;
    gap: .75rem;
}
.search-form .form-input { flex: 1; }

/* ── Divider ─────────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--color-border); margin-block: 2rem; }

/* ── Utility strips ──────────────────────────────────────────── */
.bg-white  { background: #fff; }
.bg-muted  { background: var(--color-bg); }
.bg-primary{ background: var(--color-primary); color: #fff; }
.rounded   { border-radius: var(--radius-lg); }
.sr-only   { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* ── Animations ──────────────────────────────────────────────── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}
.animate-fadeUp { animation: fadeUp .5s ease forwards; }

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .footer__grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
    .hero__inner  { gap: 2.5rem; }
    .calculator-page__grid { grid-template-columns: 1fr; }
    .calculator-page__sidebar { position: static; }
}

@media (max-width: 768px) {
    .primary-nav    { display: none; }
    .header__actions .btn { display: none; }
    .nav-toggle     { display: flex; }
    .hero__inner    { grid-template-columns: 1fr; text-align: center; }
    .hero__desc     { max-width: 100%; margin-inline: auto; }
    .hero__actions  { justify-content: center; }
    .hero__stats    { justify-content: center; }
    .hero__visual   { display: none; }
    .footer__grid   { grid-template-columns: 1fr 1fr; }
    .footer__bottom { flex-direction: column; text-align: center; }
    .cta-banner     { text-align: center; }
    .cta-banner p   { margin-inline: auto; }
    .form-row       { grid-template-columns: 1fr; }
}

@media (max-width: 540px) {
    .footer__grid { grid-template-columns: 1fr; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .hero__actions { flex-direction: column; }
    .hero__actions .btn { width: 100%; justify-content: center; }
}