:root {
    /* Color — Olive Ledger */
    --color-bg: #F5F2E9;
    --color-surface: #FBF9F3;
    --color-surface-alt: #EFEADA;
    --color-primary: #3F4B38;
    --color-primary-dark: #2E3629;
    --color-primary-soft: #E4E7DE;
    --color-accent: #B58A52;
    --color-accent-dark: #8C6A3A;
    --color-accent-soft: #F0E4D2;
    --color-text: #20231F;
    --color-heading: var(--color-primary);
    --color-text-muted: #65745A;
    --color-line: #E6E1D3;
    --color-line-strong: #D6CEB8;
    --color-focus: #8C6A3A;
    --color-danger: #8A3B2E;
    --color-danger-soft: #F4E1DB;

    /* Type */
    --font-display: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-body: "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-mono: "Public Sans", ui-monospace, SFMono-Regular, monospace;

    /* Scale (base 16px, 1.25 ratio-ish, hand tuned) */
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-md: 1.125rem;
    --fs-lg: 1.375rem;
    --fs-xl: 1.75rem;
    --fs-2xl: 2.25rem;
    --fs-3xl: 3rem;

    /* Space */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 3rem;
    --space-8: 4.5rem;
    --space-9: 4rem;

    /* Shape / elevation */
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 28px;
    --radius-full: 999px;
    --shadow-card: 0 2px 4px rgba(63, 45, 20, 0.08), 0 12px 28px -10px rgba(63, 45, 20, 0.28);
    --shadow-pop: 0 16px 44px -14px rgba(47, 33, 15, 0.4);

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}


/* ==========================================================================
   Status badges
   ========================================================================== */

/* 緊湊清單列維持小標籤，空間有限 */
.status-badge {
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 0.25rem 0.55rem;
    border-radius: var(--radius-full);
    color: #fff;
    flex-shrink: 0;
}

.status-badge--outline {
    background: var(--color-text-muted);
}

.status-badge--locked {
    background: var(--color-accent-dark);
}

.status-badge--live {
    background: var(--color-primary);
}

/* Tech chips (hero + featured-card + list + detail) */
.tech-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-line);
}

.tech-chip {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--color-heading);
    background: var(--color-surface-alt);
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-full);
}

.tech-chip--more {
    color: var(--color-text-muted);
}

/* ==========================================================================
   Reset / base
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
    overflow-x: clip;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    margin: 0;
    font-family: var(--font-body);
    font-size: var(--fs-base);
    line-height: 1.55;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    transition: background-color 200ms var(--ease-out), color 200ms var(--ease-out);
    overflow-x: clip;
}

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

ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
    color: inherit;
    background: none;
    border: 0;
    cursor: pointer;
}

input,
select {
    font: inherit;
    color: inherit;
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-display);
    font-weight: 600;
    margin: 0;
    letter-spacing: -0.01em;
}

h1 {
    font-size: var(--fs-3xl);
    line-height: 1.08;
}

h2 {
    font-size: var(--fs-2xl);
    line-height: 1.15;
}

h3 {
    font-size: var(--fs-md);
    line-height: 1.3;
}

p {
    margin: 0;
}

:focus-visible {
    outline: 2.5px solid var(--color-focus);
    outline-offset: 2px;
    border-radius: 4px;
}

.wrap {
    max-width: 1180px;
    margin-inline: auto;
    padding-inline: var(--space-5);
}

.section {
    padding-block: var(--space-9);
    background: var(--color-bg);
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 0;
    background: var(--color-primary);
    color: #fff;
    padding: var(--space-3) var(--space-4);
    z-index: 200;
    border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
    left: 0;
}

.eyebrow {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-accent-dark);
    background: var(--color-accent-soft);
    padding: 0.3rem 0.65rem;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-2);
}

.eyebrow-light {
    background: rgba(255, 255, 255, 0.12);
    color: var(--color-accent-soft);
}

.text-muted {
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ==========================================================================
   Scroll reveal
   ========================================================================== */

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 650ms var(--ease-out), transform 650ms var(--ease-out);
}

.reveal--in {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: 44px;
    padding: 0.7rem 1.25rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--fs-sm);
    white-space: nowrap;
    transition: background-color 160ms var(--ease-out), color 160ms var(--ease-out), transform 160ms var(--ease-out), box-shadow 160ms var(--ease-out);
}

.btn:active {
    transform: translateY(1px);
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
}

.btn-accent {
    background: var(--color-accent-dark);
    color: #fff;
}

.btn-accent:hover {
    background: #74572E;
}

.btn-ghost {
    background: transparent;
    color: var(--color-heading);
    border: 1.5px solid var(--color-line-strong);
}

.btn-ghost:hover {
    background: var(--color-surface-alt);
}

.text-link {
    font-weight: 600;
    font-size: var(--fs-sm);
    color: var(--color-heading);
    border-bottom: 1.5px solid var(--color-line-strong);
    padding-bottom: 2px;
    transition: border-color 160ms var(--ease-out);
}

.text-link:hover {
    border-color: var(--color-accent);
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(245, 242, 233, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-line);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    min-height: 76px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: var(--fs-md);
    color: var(--color-heading);
    margin-right: auto;
}

.logo-mark {
    color: var(--color-accent);
    flex-shrink: 0;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.nav-link {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--color-text-muted);
    padding: var(--space-2) 0;
    border-bottom: 2px solid transparent;
    transition: color 160ms var(--ease-out), border-color 160ms var(--ease-out);
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--color-heading);
}

.nav-link.is-active {
    border-color: var(--color-accent);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-heading);
    transition: transform 200ms var(--ease-out), opacity 200ms var(--ease-out);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    background: var(--color-primary-dark);
    color: rgba(255, 255, 255, 0.82);
    padding-top: var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: var(--space-6);
    padding-bottom: var(--space-7);
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: var(--space-3);
}

.footer-brand p {
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: var(--space-5);
    max-width: 32ch;
}

.newsletter label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: var(--space-2);
    color: rgba(255, 255, 255, 0.9);
}

.newsletter-row {
    display: flex;
    gap: var(--space-2);
}

.newsletter-row input {
    flex: 1;
    min-width: 0;
    height: 44px;
    border-radius: var(--radius-sm);
    border: 1.5px solid rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.06);
    color: #fff;
    padding-inline: var(--space-3);
}

.newsletter-row input::placeholder {
    color: rgba(255, 255, 255, 0.45);
}

.footer-col h4 {
    font-family: var(--font-body);
    font-size: var(--fs-sm);
    color: #fff;
    margin-bottom: var(--space-4);
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-col a {
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.65);
    transition: color 160ms var(--ease-out);
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-3);
    padding-block: var(--space-5);
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.55);
}

.footer-legal {
    display: flex;
    gap: var(--space-5);
}

.footer-legal a:hover {
    color: #fff;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

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

@media (max-width: 860px) {
    .main-nav {
        display: none;
    }

    .header-cta {
        padding-inline: var(--space-3);
        font-size: 0.8rem;
    }

    .nav-toggle {
        display: flex;
    }

    .site-header.nav-open .main-nav {
        display: flex;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        background: var(--color-surface);
        border-bottom: 1px solid var(--color-line);
        padding: var(--space-3) var(--space-5) var(--space-5);
    }

    .site-header.nav-open .nav-link {
        padding: var(--space-3) 0;
        border-bottom: 1px solid var(--color-line);
    }

    h1 {
        font-size: var(--fs-2xl);
    }

    .search-fields {
        grid-template-columns: 1fr 1fr;
    }

    .field-location {
        grid-column: 1 / -1;
    }

    .search-submit {
        grid-column: 1 / -1;
    }

}

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

    h1 {
        font-size: var(--fs-xl);
    }

    .header-list span {
        display: none;
    }

    .header-list::after {
        content: "List";
    }

    /* 螢幕夠窄時，藏主題切換鈕（非必要功能），留空間給 Contact CTA 跟漢堡選單（不藏 CTA，改藏這個） */
    .theme-toggle {
        display: none;
    }
}

/* ==========================================================================
   Theme toggle
   ========================================================================== */

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    border: 1.5px solid var(--color-line-strong);
    color: var(--color-heading);
    flex-shrink: 0;
    transition: background-color 160ms var(--ease-out), border-color 160ms var(--ease-out);
}

.theme-toggle:hover {
    background: var(--color-surface-alt);
}

.theme-toggle__icon {
    width: 18px;
    height: 18px;
}

.theme-toggle__icon--moon {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--sun {
    display: none;
}

[data-theme="dark"] .theme-toggle__icon--moon {
    display: block;
}

/* ==========================================================================
   Dark mode
   ========================================================================== */

[data-theme="dark"] {
    --color-bg: #1B1D16;
    --color-surface: #24271F;
    --color-surface-alt: #2C2F25;
    --color-heading: #E4E7D8;
    --color-text: #E8E6DD;
    --color-text-muted: #A3A896;
    --color-line: #383B2F;
    --color-line-strong: #4A4E3D;
    --color-accent-soft: #3A2E1C;
    --color-danger: #E7A192;
    --color-danger-soft: #3A2420;
}

[data-theme="dark"] .site-header {
    background: rgba(27, 29, 22, 0.88);
}

[data-theme="dark"] .thumb-placeholder {
    color: rgba(255, 255, 255, 0.55);
}