/* ===================================================
   alsos – Corporate Site Stylesheet (Light Theme)
   Fonts: Zen Kaku Gothic New + Space Grotesk
   =================================================== */

:root {
    --ink: #1c2024;
    --muted: #6b7580;
    --line: rgba(28, 35, 42, .10);
    --paper: #f5f7f9;
    --paper-2: #edf0f4;
    --white: #ffffff;
    --blue: #3c6f7c;
    --blue-dark: #1f4d59;
    --green: #9fbea7;
    --yellow: #f1c96b;
    --pink: #e9a6a2;
    --radius: 1.5rem;
    --shadow: 0 20px 50px rgba(28, 35, 42, .06);
    --font-jp: "Zen Kaku Gothic New", "Noto Sans JP", system-ui, sans-serif;
    --font-en: "Space Grotesk", system-ui, sans-serif;
}

/* --- Base --- */
body {
    background-color: var(--paper);
    color: var(--ink);
    font-family: var(--font-jp);
    scroll-behavior: smooth;
    line-height: 1.8;
}
.font-en {
    font-family: var(--font-en);
}

/* --- Navigation --- */
#main-nav {
    background: rgba(245, 247, 249, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
}
#main-nav a,
#main-nav button {
    color: var(--ink);
}
.nav-brand {
    font-family: var(--font-en);
    color: var(--ink);
}

/* --- Mobile Menu --- */
#mobile-menu-overlay {
    background: var(--paper);
    clip-path: circle(0% at 100% 0%);
    transition: clip-path 0.5s ease-in-out;
}
#mobile-menu-overlay.active {
    clip-path: circle(150% at 100% 0%);
}
#mobile-menu-overlay a {
    color: var(--ink);
}
#mobile-menu-overlay .accent-link {
    color: var(--blue);
}

/* --- Hero Section --- */
.hero-section {
    background:
        linear-gradient(rgba(245, 247, 249, 0.82), rgba(245, 247, 249, 0.94)),
        url('https://alsos.ltd/wp-content/uploads/2026/02/future.jpg') center/cover no-repeat;
}
.hero-eyebrow {
    font-family: var(--font-en);
    color: var(--muted);
}
.hero-title {
    color: var(--ink);
}
.hero-title .emphasis {
    font-style: normal;
    color: var(--blue-dark);
}

/* --- Buttons --- */
.btn-primary {
    background-color: var(--ink);
    color: var(--white);
    transition: all 0.3s ease;
}
.btn-primary:hover {
    background-color: var(--blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(32, 32, 29, .12);
}
.btn-ghost {
    border: 1px solid var(--line);
    background: var(--white);
    color: var(--ink);
    transition: all 0.3s ease;
}
.btn-ghost:hover {
    background: var(--paper-2);
    transform: translateY(-2px);
}
.btn-accent {
    background-color: var(--blue);
    color: var(--white);
    transition: all 0.3s ease;
}
.btn-accent:hover {
    background-color: var(--blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(31, 77, 89, .2);
}

/* --- Card --- */
.card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    transition: all 0.3s ease;
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
    border-color: rgba(60, 111, 124, .2);
}

/* --- About Section --- */
.about-section {
    background: var(--paper);
}
.about-photo-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}
.founder-border {
    border-left: 2px solid var(--blue);
}

/* --- Projects Section --- */
.projects-section {
    background: var(--paper-2);
}
.project-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 2rem;
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
}
.project-card:visited {
    color: inherit;
}
.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow);
}
.project-card-featured {
    background: var(--blue-dark);
    color: var(--white);
    border-color: transparent;
}
.project-card-featured:visited {
    color: var(--white);
}
.project-card .project-img-overlay {
    transition: transform 0.7s ease, opacity 0.7s ease;
}
.project-card:hover .project-img-overlay {
    transform: scale(1.1);
    opacity: 0.25;
}

/* --- Tenants Section --- */
.tenants-section {
    background: var(--paper);
    position: relative;
}
.tenants-bg-gradient {
    background: linear-gradient(135deg, rgba(60, 111, 124, 0.04) 0%, transparent 50%, rgba(159, 190, 167, 0.04) 100%);
}
.tenants-bg-radial {
    background: radial-gradient(circle, var(--blue), transparent 70%);
}
.tenant-feature-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 2rem;
    transition: all 0.3s ease;
}
.tenant-feature-card:hover {
    background: var(--white);
    border-color: rgba(60, 111, 124, .3);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.tenant-icon-bg {
    background: rgba(60, 111, 124, 0.1);
}
.tenant-icon-color {
    color: var(--blue);
}
.tenant-number {
    display: block;
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.04em;
    color: var(--blue);
    opacity: 0.2;
    margin-bottom: 1.2rem;
}
.tenant-cta-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 2.5rem;
}
.accent-gradient {
    background: linear-gradient(135deg, var(--blue), var(--blue-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.portal-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(60, 111, 124, 0.1);
    border: 1px solid rgba(60, 111, 124, 0.3);
    color: var(--blue);
    padding: 0.3rem 0.8rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

/* --- Checklist card --- */
.checklist-card {
    background: var(--paper);
    border: 1px solid var(--line);
}

/* --- Radio Section --- */
.radio-section {
    background: var(--paper);
}
.radio-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 3rem;
    overflow: hidden;
    box-shadow: var(--shadow);
}
.radio-live-dot {
    background-color: var(--blue);
}
.radio-image-section {
    background: var(--paper-2);
}
.radio-icon-circle {
    border: 1px solid var(--ink);
    background: rgba(32, 32, 29, 0.05);
    backdrop-filter: blur(8px);
}

/* --- Contact Section --- */
.contact-section {
    background: var(--blue-dark);
    color: var(--white);
}
.contact-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    transition: all 0.3s ease;
}
.contact-card:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-4px);
}
.contact-card-accent:hover {
    border-color: rgba(241, 201, 107, 0.5);
}
.sns-button {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--white);
    transition: all 0.3s ease;
}
.sns-button:hover {
    background: var(--white);
    color: var(--ink);
}

/* --- Footer --- */
.site-footer {
    background: var(--ink);
    color: var(--white);
}
.footer-link {
    color: rgba(255, 253, 248, 0.4);
    transition: color 0.3s ease;
}
.footer-link:hover {
    color: rgba(255, 253, 248, 1);
}

/* --- Scroll Animation --- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Custom Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: var(--blue); border-radius: 10px; }

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation: none !important; transition: none !important; }
    .reveal { opacity: 1; transform: none; }
}

/* ===================================================
   Active Projects – unified white-base cards (4 cards)
   =================================================== */
.project-grid-modern {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
}
.project-card-modern {
    display: flex;
    flex-direction: column;
    min-height: 480px;
    padding: 0;
    overflow: hidden;
    border-radius: 2rem;
    background: var(--white);
    border: 1px solid rgba(32, 32, 29, .10);
    box-shadow: 0 18px 46px rgba(32, 32, 29, .045);
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}
.project-card-modern:hover {
    transform: translateY(-8px);
    box-shadow: 0 28px 70px rgba(32, 32, 29, .10);
}
.project-card-modern:visited { color: inherit; }

/* --- Visual area (top half) --- */
.project-visual {
    position: relative;
    height: 240px;
    margin: 0;
    overflow: hidden;
    background: var(--paper);
}
.project-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(180deg, rgba(255,255,255,0) 50%, rgba(28,35,42,.04) 100%);
}
.project-visual img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    transition: transform .8s ease;
}
.project-card-modern:hover .project-visual img {
    transform: scale(1.045);
}

/* GOJŌ photo */
.project-visual-photo img {
    filter: brightness(1.04) saturate(.92);
}

/* Kogassy */
.project-visual-kogassy {
    background:
        radial-gradient(circle at 50% 46%, rgba(159,190,167,.22), transparent 42%),
        linear-gradient(135deg, #f5f7f9, #edf0f4);
}
.project-visual-kogassy::before {
    content: "KOGASSY";
    position: absolute;
    right: 1rem;
    bottom: .4rem;
    z-index: 0;
    font-family: var(--font-en);
    font-weight: 700;
    font-size: clamp(2.5rem, 5vw, 4.2rem);
    letter-spacing: -.06em;
    color: rgba(28,35,42,.05);
}
.project-visual-kogassy img {
    position: relative;
    z-index: 1;
    object-fit: contain;
    padding: 2rem 1.5rem 1.5rem;
    filter: drop-shadow(0 18px 24px rgba(28,35,42,.13));
}

/* Portal */
.project-visual-portal {
    background: #F3EEE5;
}
.project-visual-portal img {
    object-fit: contain;
    object-position: center;
    padding: 1rem;
}

/* Store – CSS-only visual */
.project-visual-store {
    background: var(--paper-2);
}
.project-visual-store img {
    object-fit: cover;
    object-position: center;
}
.project-visual-store::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle, rgba(28,35,42,.03) 1px, transparent 1px);
    background-size: 24px 24px;
}
.project-visual-store::after {
    background: none;
}
.store-tag {
    position: relative;
    z-index: 1;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 1rem;
    padding: 1.8rem 2.5rem;
    text-align: center;
    box-shadow: 0 8px 24px rgba(28,35,42,.06);
    transform: rotate(-2deg);
    transition: transform 0.5s ease;
}
.project-card-modern:hover .store-tag {
    transform: rotate(0deg) scale(1.03);
}
.store-tag-hole {
    display: block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1.5px solid var(--line);
    margin: 0 auto .7rem;
}
.store-tag-label {
    display: block;
    font-family: var(--font-en);
    font-size: .65rem;
    font-weight: 700;
    letter-spacing: .22em;
    color: var(--muted);
    margin-bottom: .4rem;
}
.store-tag-jp {
    display: block;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: .05em;
}

/* --- Body area (bottom half) --- */
.project-body {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 1.8rem 2rem;
}
.project-kicker {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-family: var(--font-en);
    font-size: .76rem;
    font-weight: 700;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--blue);
    opacity: .78;
}
.project-card-modern h3 {
    margin: 0 0 .8rem;
    font-size: 1.6rem;
    line-height: 1.25;
    font-weight: 700;
    letter-spacing: -.02em;
}
.project-card-modern h3 span {
    display: block;
    margin-bottom: .3rem;
    font-size: .78rem;
    letter-spacing: .08em;
    color: var(--muted);
    font-weight: 700;
}
.project-card-modern p {
    margin: 0;
    color: var(--muted);
    font-size: .92rem;
    line-height: 1.85;
}
.project-link {
    margin-top: auto;
    padding-top: 1.4rem;
    font-family: var(--font-en);
    font-size: .76rem;
    font-weight: 700;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--blue);
    opacity: .62;
    transition: opacity .25s ease, transform .25s ease;
}
.project-card-modern:hover .project-link {
    opacity: 1;
    transform: translateX(4px);
}
.project-link-badge {
    align-self: flex-start;
    padding: .4rem .8rem;
    border: 1px solid rgba(60,111,124,.28);
    border-radius: 999px;
    background: rgba(60,111,124,.08);
    letter-spacing: .08em;
    color: var(--blue);
}

/* Preparing badge */
.preparing-badge {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    padding: .2rem .6rem;
    border-radius: 999px;
    background: rgba(60,111,124,.08);
    border: 1px solid rgba(60,111,124,.18);
    color: var(--blue);
    font-family: var(--font-en);
    font-size: .6rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    opacity: 1;
}
.preparing-badge::before {
    content: "";
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--blue);
    opacity: .5;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .project-grid-modern { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; }
}
@media (max-width: 767px) {
    .project-grid-modern { grid-template-columns: 1fr; gap: 1.35rem; }
    .project-card-modern { min-height: auto; border-radius: 1.45rem; }
    .project-visual { height: 220px; }
    .project-body { padding: 1.4rem; }
    .project-card-modern h3 { font-size: 1.4rem; }
}