/* ============================================
   MR. SELLER — CORE DESIGN SYSTEM
   Faithful to the MrSeller Color Theme spec
   ============================================ */

:root {
    /* ── Core Brand (from logo) ── */
    --color-jet-black:             #0D0D0D;   /* header bg, h1, structure   */
    --color-pure-white:            #FFFFFF;   /* body bg, card bg, on-dark  */
    --color-signature-turquoise:   #3ED8D3;   /* action / CTA only          */
    --color-shadow-gray:           #9A9A9A;   /* muted text, dividers       */

    /* ── Supporting shades ── */
    --color-deep-charcoal:         #1A1A1A;   /* footer bg, h2/h3           */
    --color-body-text:             #3A3A3A;   /* body paragraph text        */
    --color-turquoise-hover:       #2BB8B3;   /* darker turquoise for hover */
    --color-turquoise-tint:        #F7FDFD;   /* alternating section bg     */
    --color-border-gray:           #E0E0E0;   /* card borders, dividers     */
    --color-success-green:         #2FBF71;   /* confirmations only         */
    --color-alert-red:             #E5484D;   /* errors only                */

    /* ── Derived/UI tokens ── */
    --color-header-bg:             rgba(255, 255, 255, 0.97);  /* white + blur */
    --color-header-border:         rgba(154, 154, 154, 0.20); /* Shadow Gray 20% opacity */
    --color-footer-bg:             #1A1A1A;
    --color-copyright-bg:          #0D0D0D;
    --color-footer-link:           #C9C9C9;
    --color-footer-divider:        rgba(154, 154, 154, 0.15); /* Shadow Gray 15% opacity */
    --color-card-shadow:           rgba(154, 154, 154, 0.08); /* Shadow Gray 8% opacity  */

    /* ── Typography ── */
    --font-primary:   'Inter', system-ui, -apple-system, sans-serif;
    --font-display:   'Outfit', 'Inter', system-ui, sans-serif;

    /* ── Radius ── */
    --radius-sm:    6px;
    --radius-md:    12px;
    --radius-lg:    20px;
    --radius-pill:  999px;

    /* ── Shadows ── */
    --shadow-card:  0 4px 16px var(--color-card-shadow);
    --shadow-md:    0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-lg:    0 20px 48px rgba(0, 0, 0, 0.20);

    /* ── Motion ── */
    --ease-smooth:      cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base:  0.25s var(--ease-smooth);
}

/* ============================================
   RESET & BASE
   ============================================ */

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

html { scroll-behavior: smooth; }

body {
    /* spec: main page background = Pure White */
    background-color: var(--color-pure-white);
    /* spec: body paragraph text = Dark Gray #3A3A3A */
    color: var(--color-body-text);
    font-family: var(--font-primary);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    /* spec: inline links = Signature Turquoise */
    color: var(--color-signature-turquoise);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover { color: var(--color-turquoise-hover); }


.hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.85rem;
}
.card-icon svg {
    color: var(--color-primary);
}

img { max-width: 100%; display: block; }

/* ── Typography hierarchy (spec: text.md) ── */
h1 { color: var(--color-jet-black); }         /* H1 = Jet Black */
h2, h3 { color: var(--color-deep-charcoal); } /* H2/H3 = Deep Charcoal */

/* ============================================
   LAYOUT
   ============================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.page-root {
    min-height: 70vh;
    padding: 0;
}

/* ============================================
   HEADER — Jet Black with blur  (spec: header.md)
   Background: Jet Black #0D0D0D
   Nav links default: White
   Nav links hover/active: Signature Turquoise
   CTA: Turquoise fill / Black text
   Bottom border: Shadow Gray 20% opacity
   ============================================ */

.site-header {
    background-color: var(--color-header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-header-border);
    padding: 0.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

/* Subtle shadow when scrolled */
.site-header.scrolled {
    box-shadow: 0 4px 32px rgba(0, 0, 0, 0.45);
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    min-height: 68px;
}

/* ── Logo ── */
.brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.brand__logo {
    /* logo pill bg is black — sits natively on black header */
    height: 54px;
    width: auto;
    object-fit: contain;
    display: block;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.brand:hover .brand__logo {
    opacity: 0.88;
    transform: scale(1.03);
}

/* ── Nav links: white default, turquoise on hover/active ── */
.main-nav {
    display: flex;
    align-items: center;
    gap: 0.1rem;
}

.nav-link {
    position: relative;
    /* nav links default = dark for white header */
    color: var(--color-jet-black);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-sm);
    letter-spacing: 0.01em;
    transition: color var(--transition-base);
}

/* spec: nav links hover/active = Signature Turquoise */
.nav-link:hover,
.nav-link.active {
    color: var(--color-signature-turquoise);
}

/* spec: active indicator = Turquoise underline 2px */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    border-radius: 99px;
    background: var(--color-signature-turquoise);
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: calc(100% - 1.5rem);
}

/* ── Header action buttons ── */
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

/* ── Mobile hamburger ── */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    /* border uses Shadow Gray 20% on black header */
    border: 1px solid rgba(154, 154, 154, 0.35);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 0.5rem;
    transition: border-color var(--transition-base);
}

.nav-toggle:hover {
    border-color: var(--color-signature-turquoise);
}

.hamburger-bar {
    display: block;
    width: 20px;
    height: 2px;
    /* bars are dark on white header */
    background: var(--color-jet-black);
    border-radius: 99px;
    transition: transform 0.3s var(--ease-smooth), opacity 0.3s ease;
    transform-origin: center;
}

.nav-toggle.is-open .hamburger-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open .hamburger-bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.is-open .hamburger-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================
   BUTTONS
   spec: CTA = Turquoise fill, Black text
   ============================================ */

/* Primary CTA — Turquoise fill / Black text */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-signature-turquoise);
    color: var(--color-jet-black);
    padding: 0.65rem 1.4rem;
    border-radius: var(--radius-pill);
    font-weight: 700;
    font-size: 0.88rem;
    border: none;
    cursor: pointer;
    letter-spacing: 0.02em;
    white-space: nowrap;
    text-decoration: none;
    transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.btn-primary:hover {
    background-color: var(--color-turquoise-hover);
    color: var(--color-jet-black);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(62, 216, 211, 0.30);
}

.btn-primary:active { transform: translateY(0); }

/* Outline variant (Login — on light header) */
.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    /* dark text on light header */
    color: var(--color-jet-black);
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.88rem;
    border: 1.5px solid var(--color-border-gray);
    cursor: pointer;
    white-space: nowrap;
    transition: border-color var(--transition-base), color var(--transition-base), background var(--transition-base);
}

.btn-outline:hover {
    border-color: var(--color-signature-turquoise);
    color: var(--color-signature-turquoise);
}

/* Large size modifier */
.btn-lg {
    padding: 0.9rem 2rem;
    font-size: 1rem;
    border-radius: var(--radius-md);
}

/* Secondary (light page) */
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--color-jet-black);
    border: 2px solid var(--color-border-gray);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: border-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
}

.btn-secondary:hover {
    border-color: var(--color-signature-turquoise);
    color: var(--color-signature-turquoise);
    transform: translateY(-2px);
}

/* ============================================
   FOOTER  (spec: footer.md)
   Background: Deep Charcoal #1A1A1A
   Headings: Signature Turquoise #3ED8D3
   Links/text: Light Gray #C9C9C9
   Link hover: White #FFFFFF
   Dividers: Shadow Gray 15% opacity
   Social icons: White → Turquoise on hover
   Copyright strip: Jet Black #0D0D0D
   ============================================ */

.site-footer {
    background-color: var(--color-footer-bg);
    color: var(--color-footer-link);
    margin-top: 0; /* wave handles the gap */
    position: relative;
}

/* Wave SVG seamlessly connects page to footer */
.footer-wave {
    width: 100%;
    line-height: 0;
    /* wave bg = page bg (Pure White) so it blends */
    background-color: var(--color-pure-white);
}

.footer-wave svg {
    width: 100%;
    height: 60px;
    display: block;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.7fr 1fr 1fr 1fr;
    gap: 3rem;
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
}

/* Brand column */
.footer-brand-col {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.footer-logo-link { display: inline-block; }

.footer__logo {
    height: 60px;
    width: auto;
    object-fit: contain;
    /* logo has black pill bg — looks great on charcoal without extra box */
    border-radius: var(--radius-md);
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.footer-logo-link:hover .footer__logo {
    opacity: 0.85;
    transform: scale(1.03);
}

.footer-tagline {
    /* spec: body links/text = Light Gray #C9C9C9 */
    color: var(--color-footer-link);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* Social icons: White → Turquoise on hover */
.footer-socials {
    display: flex;
    gap: 0.6rem;
    margin-top: 0.25rem;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    /* white icons on dark surface */
    color: var(--color-pure-white);
    background: transparent;
    border: 1px solid var(--color-footer-divider);
    transition: color var(--transition-base), border-color var(--transition-base), background var(--transition-base), transform var(--transition-base);
}

.social-icon:hover {
    /* spec: social icons hover = Turquoise */
    color: var(--color-signature-turquoise);
    border-color: var(--color-signature-turquoise);
    background: rgba(62, 216, 211, 0.08);
    transform: translateY(-3px);
}

/* Footer columns */
.footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* spec: footer headings = Signature Turquoise */
.footer-col-title {
    color: var(--color-signature-turquoise);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 0.75rem;
}

/* spec: body links = Light Gray #C9C9C9 */
.footer-link {
    display: inline-block;
    color: var(--color-footer-link);
    font-size: 0.91rem;
    padding: 0.18rem 0;
    transition: color var(--transition-base), transform var(--transition-base);
}

/* spec: link hover = White */
.footer-link:hover {
    color: var(--color-pure-white);
    transform: translateX(4px);
}

.footer-note {
    color: var(--color-shadow-gray);
    font-size: 0.82rem;
    line-height: 1.6;
    margin-top: 0.5rem;
}

.footer-contact-label {
    color: var(--color-footer-link);
    font-size: 0.85rem;
}

/* phone in turquoise */
.footer-phone {
    color: var(--color-signature-turquoise);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    transition: color var(--transition-base);
}

.footer-phone:hover { color: var(--color-pure-white); }

.footer-hours {
    color: var(--color-shadow-gray);
    font-size: 0.85rem;
}

.footer-cta-btn {
    margin-top: 0.75rem;
    font-size: 0.85rem;
    padding: 0.6rem 1.25rem;
    align-self: flex-start;
}

/* spec: copyright strip = Jet Black #0D0D0D */
.footer-bottom {
    background-color: var(--color-copyright-bg);
    border-top: 1px solid var(--color-footer-divider);
    padding: 1.25rem 0;
}

.footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    color: var(--color-shadow-gray);
    font-size: 0.84rem;
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-bottom-links a {
    color: var(--color-shadow-gray);
    font-size: 0.84rem;
    transition: color var(--transition-base);
}

.footer-bottom-links a:hover { color: var(--color-pure-white); }

.footer-divider {
    opacity: 0.4;
    user-select: none;
}

/* ============================================
   UTILITIES
   ============================================ */

.section-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    /* spec: H2/H3 = Deep Charcoal */
    color: var(--color-deep-charcoal);
    letter-spacing: -0.02em;
    line-height: 1.15;
}

/* spec: turquoise tint alternating section bg */
.section-tint {
    background-color: var(--color-turquoise-tint);
}

/* spec: black band (stats/trust bar) */
.section-dark {
    background-color: var(--color-jet-black);
    color: var(--color-pure-white);
}

/* spec: final CTA band = full Signature Turquoise bg, black text */
.section-cta {
    background-color: var(--color-signature-turquoise);
    color: var(--color-jet-black);
}

.glass-panel {
    background: rgba(255, 255, 255, 0.80);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--color-border-gray);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-card);
}

.text-center { text-align: center; }

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 900px) {
    .header-actions { display: none; }
    .nav-toggle { display: flex; }

    .main-nav {
        display: none;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        /* mobile nav inherits header white */
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(12px);
        border-top: 1px solid var(--color-header-border);
        border-bottom: 1px solid var(--color-header-border);
        padding: 0.75rem 1.5rem;
        box-shadow: 0 12px 32px rgba(0,0,0,0.1);
        z-index: 999;
    }

    .main-nav.is-open {
        display: flex;
        animation: slideDown 0.22s var(--ease-smooth);
    }

    .nav-link {
        width: 100%;
        padding: 0.75rem 0.5rem;
        border-bottom: 1px solid var(--color-header-border);
        border-radius: 0;
        font-size: 0.95rem;
    }

    .nav-link:last-child { border-bottom: none; }
    .nav-link::after { display: none; }
}

@media (max-width: 640px) {
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-bottom-inner {
        flex-direction: column;
        text-align: center;
    }

    .section-title { font-size: 1.9rem; }
}

/* ============================================
   KEYFRAMES
   ============================================ */

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}