/* =============================================
   Works Page — Flagship Portfolio Styles
   黒 × グリーン × 作品集としての美しさ
   ============================================= */

.wk-page {
    --wk-green: #00c853;
    --wk-green-dark: #00a844;
    --wk-surface-1: #0f0f11;
    --wk-surface-2: #141416;
    --wk-surface-3: #1a1a1e;
    --wk-border: #2a2a2e;
    --wk-text: #e0e0e0;
    --wk-muted: #9ca3af;
    --wk-font-en: 'Inter', 'Helvetica Neue', sans-serif;
    background-color: var(--wk-surface-1);
    color: var(--wk-text);
}

/* ── Scroll Reveal ── */
.wk-fade {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.wk-fade.is-visible { opacity: 1; transform: translateY(0); }
.wk-d1 { transition-delay: 0.12s; }
.wk-d2 { transition-delay: 0.24s; }
.wk-d3 { transition-delay: 0.36s; }
.wk-d4 { transition-delay: 0.48s; }
.wk-d5 { transition-delay: 0.60s; }

.header-solid {
    background-color: rgba(15, 15, 17, 0.95) !important;
    backdrop-filter: blur(10px);
}

/* =============================================
   HERO
   ============================================= */
.wk-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: flex-end;
    padding: 0 0 80px;
    background: var(--wk-surface-1);
    overflow: hidden;
}
.wk-hero-overlay {
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 30% 70%, rgba(0, 200, 83, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 30%, rgba(0, 200, 83, 0.03) 0%, transparent 50%);
}
.wk-hero-grain {
    position: absolute; inset: 0; opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 256px;
}

.wk-hero-watermark {
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    white-space: nowrap; pointer-events: none; z-index: 1;
}
.wk-wm-line {
    display: block; font-family: var(--wk-font-en); font-weight: 900;
    text-transform: uppercase; line-height: 0.85; user-select: none;
}
.wk-wm-1 { font-size: clamp(8rem, 18vw, 22rem); letter-spacing: -5px; }
.wk-wm-2 { font-size: clamp(5rem, 12vw, 14rem); letter-spacing: -3px; margin-left: 8%; }
.wk-wm-base .wk-wm-line { color: var(--wk-surface-1); -webkit-text-stroke: 1px #374151; paint-order: stroke fill; }
.wk-wm-draw { position: absolute; top: 0; left: 0; width: 100%; }
.wk-wm-draw .wk-wm-line { color: #1a1d20; -webkit-text-stroke: 1px var(--wk-green); paint-order: stroke fill; }
.wk-wm-draw .wk-wm-1 { clip-path: inset(0 100% 0 0); animation: wkWmReveal 3s cubic-bezier(0.22, 0.61, 0.36, 1) 0.5s forwards; }
.wk-wm-draw .wk-wm-2 { clip-path: inset(0 100% 0 0); animation: wkWmReveal 4s cubic-bezier(0.22, 0.61, 0.36, 1) 1.5s forwards; }
@keyframes wkWmReveal { to { clip-path: inset(-5% -15% -5% -5%); } }

.wk-hero-accent {
    position: absolute; top: 0; left: 0; width: 4px; height: 100%;
    background: linear-gradient(180deg, transparent 0%, var(--wk-green) 30%, var(--wk-green) 70%, transparent 100%);
    z-index: 5;
}
.wk-hero-content {
    position: relative; z-index: 10;
    max-width: 1200px; width: 100%; margin: 0 auto; padding: 0 40px;
}
.wk-breadcrumb {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.8rem; color: var(--wk-muted); margin-bottom: 3rem;
}
.wk-breadcrumb a { color: var(--wk-muted); transition: color 0.3s; }
.wk-breadcrumb a:hover { color: var(--wk-green); }
.wk-breadcrumb .current { color: var(--wk-green); }

.wk-hero-en {
    font-family: var(--wk-font-en); font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 900; color: rgba(255, 255, 255, 0.04);
    letter-spacing: 4px; text-transform: uppercase; line-height: 1; margin-bottom: -10px;
}
.wk-hero-title {
    font-size: clamp(2.2rem, 4.5vw, 3.5rem); font-weight: 900;
    color: #fff; letter-spacing: 4px; margin-bottom: 1.5rem; line-height: 1.3;
}
.wk-hero-lead {
    font-size: 1rem; color: var(--wk-muted); line-height: 2.2;
    max-width: 600px; letter-spacing: 0.5px;
}
.wk-hero-stats {
    display: flex; align-items: center;
    background: rgba(255, 255, 255, 0.03); border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px; padding: 28px 0; max-width: 560px;
    margin-top: 2.5rem; backdrop-filter: blur(4px);
}
.wk-hero-stat { flex: 1; text-align: center; }
.wk-hero-stat-num { font-family: var(--wk-font-en); font-size: 2.5rem; font-weight: 900; color: var(--wk-green); line-height: 1; }
.wk-hero-stat-unit { font-size: 0.9rem; font-weight: 700; color: var(--wk-green); margin-left: 2px; }
.wk-hero-stat-label { display: block; font-size: 0.7rem; color: var(--wk-muted); margin-top: 6px; letter-spacing: 1px; }
.wk-hero-stat-divider { width: 1px; height: 40px; background: rgba(255, 255, 255, 0.08); }

.wk-scroll-cue {
    position: absolute; bottom: 40px; right: 40px;
    display: flex; flex-direction: column; align-items: center; gap: 12px; z-index: 10;
}
.wk-scroll-cue span { font-family: var(--wk-font-en); font-size: 0.7rem; letter-spacing: 3px; color: var(--wk-muted); text-transform: uppercase; writing-mode: vertical-rl; }
.wk-scroll-line { width: 1px; height: 60px; background: linear-gradient(180deg, var(--wk-green), transparent); animation: wkScrollPulse 2s ease-in-out infinite; }
@keyframes wkScrollPulse { 0%, 100% { opacity: 1; transform: scaleY(1); } 50% { opacity: 0.4; transform: scaleY(0.6); } }

/* =============================================
   SECTION COMMON
   ============================================= */
.wk-section-en {
    display: block; font-family: var(--wk-font-en); font-size: 0.75rem;
    letter-spacing: 6px; color: var(--wk-green); text-transform: uppercase;
    text-align: center; margin-bottom: 12px;
}
.wk-section-title {
    font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 900; color: #fff;
    text-align: center; letter-spacing: 3px; margin-bottom: 10px; line-height: 1.5;
}
.wk-section-sub {
    text-align: center; font-size: 0.95rem; color: var(--wk-muted); margin-bottom: 60px;
}

/* =============================================
   WORKS GALLERY — カードUI
   ============================================= */
.wk-gallery {
    background: var(--wk-surface-2);
    padding: 120px 0;
}
.wk-gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
    max-width: 1200px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
}

.wk-card {
    position: relative;
    background: var(--wk-surface-3);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.4s ease;
}
.wk-card::before {
    content: '';
    display: block;
    padding-top: 75%;
}

.wk-card-image {
    position: absolute; inset: 0;
    background: var(--wk-surface-3);
    display: flex; align-items: center; justify-content: center;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.wk-card-image svg { opacity: 0.15; }
.wk-card:hover .wk-card-image { transform: scale(1.05); }

.wk-card-overlay {
    position: absolute; inset: 0; z-index: 2;
    background: linear-gradient(180deg, transparent 30%, rgba(15, 15, 17, 0.95) 100%);
    display: flex; flex-direction: column; justify-content: flex-end;
    padding: 30px 24px;
    transition: background 0.4s ease;
}
.wk-card:hover .wk-card-overlay {
    background: linear-gradient(180deg, rgba(0, 200, 83, 0.05) 0%, rgba(15, 15, 17, 0.97) 100%);
}

.wk-card-tags {
    display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px;
}
.wk-card-tag {
    font-family: var(--wk-font-en); font-size: 0.6rem; font-weight: 700;
    letter-spacing: 2px; text-transform: uppercase;
    color: var(--wk-green); background: rgba(0, 200, 83, 0.1);
    padding: 4px 10px; border-radius: 3px;
}
.wk-card-title {
    font-size: 1.1rem; font-weight: 700; color: #fff;
    letter-spacing: 1px; margin-bottom: 8px;
}
.wk-card-meta {
    display: flex; align-items: center; gap: 16px;
    font-size: 0.75rem; color: var(--wk-muted);
}
.wk-card-meta span { display: flex; align-items: center; gap: 4px; }
.wk-card-arrow {
    position: absolute; top: 20px; right: 20px; z-index: 3;
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(0, 200, 83, 0.1); border-radius: 50%;
    color: var(--wk-green);
    opacity: 0; transform: translateX(-8px);
    transition: all 0.3s ease;
}
.wk-card:hover .wk-card-arrow { opacity: 1; transform: translateX(0); }

/* =============================================
   CASE STUDY — 事例詳細
   ============================================= */
.wk-case {
    padding: 120px 0;
}
.wk-case-bg1 { background: var(--wk-surface-1); }
.wk-case-bg2 { background: var(--wk-surface-2); }

.wk-case-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ── ケースヘッダー ── */
.wk-case-header {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 40px;
    align-items: end;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--wk-border);
    margin-bottom: 50px;
}
.wk-case-num {
    font-family: var(--wk-font-en); font-size: 0.75rem;
    letter-spacing: 6px; color: var(--wk-green); text-transform: uppercase;
    margin-bottom: 12px;
}
.wk-case-name {
    font-size: clamp(1.4rem, 2.5vw, 2rem);
    font-weight: 900; color: #fff; letter-spacing: 3px; margin-bottom: 1rem;
}
.wk-case-desc {
    font-size: 0.9rem; color: var(--wk-muted); line-height: 1.9;
}

.wk-case-specs {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 0;
    background: var(--wk-border); border: 1px solid var(--wk-border);
    border-radius: 8px; overflow: hidden; min-width: 300px;
}
.wk-spec {
    background: var(--wk-surface-3); padding: 16px 20px;
}
.wk-spec-label {
    font-size: 0.65rem; font-weight: 700; letter-spacing: 2px;
    color: var(--wk-green); text-transform: uppercase; margin-bottom: 4px;
}
.wk-spec-value { font-size: 0.9rem; color: #fff; font-weight: 500; }

/* ── Before / After ── */
.wk-case-photos {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 50px;
}
.wk-photo-slot {
    position: relative;
    background: var(--wk-surface-3);
    aspect-ratio: 4 / 3;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 8px; color: var(--wk-muted);
    transition: background 0.3s ease;
}
.wk-photo-slot:hover { background: rgba(0, 200, 83, 0.03); }
.wk-photo-slot svg { opacity: 0.2; }
.wk-photo-label {
    position: absolute; top: 12px; left: 12px;
    font-family: var(--wk-font-en); font-size: 0.6rem; font-weight: 700;
    letter-spacing: 3px; text-transform: uppercase;
    color: var(--wk-green); background: rgba(0, 200, 83, 0.1);
    padding: 4px 10px; border-radius: 3px;
}
.wk-photo-slot span:not(.wk-photo-label) { font-size: 0.75rem; letter-spacing: 1px; }

/* ── ストーリー（課題→提案→結果） ── */
.wk-case-story {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    background: var(--wk-border);
    border: 1px solid var(--wk-border);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 50px;
}
.wk-story-step {
    background: var(--wk-surface-3);
    padding: 40px 30px;
    transition: background 0.3s ease;
}
.wk-story-step:hover { background: rgba(0, 200, 83, 0.02); }

.wk-story-num {
    font-family: var(--wk-font-en); font-size: 2.5rem; font-weight: 900;
    color: rgba(0, 200, 83, 0.1); line-height: 1; margin-bottom: 6px;
}
.wk-story-label {
    font-family: var(--wk-font-en); font-size: 0.6rem; font-weight: 700;
    letter-spacing: 3px; color: var(--wk-green); text-transform: uppercase;
    margin-bottom: 16px;
}
.wk-story-step h4 {
    font-size: 1.05rem; font-weight: 700; color: #fff;
    letter-spacing: 1px; margin-bottom: 12px;
}
.wk-story-step p {
    font-size: 0.85rem; color: var(--wk-muted); line-height: 1.9;
}

/* ── 管理体制 & 保証 ── */
.wk-case-mgmt {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--wk-border);
    border: 1px solid var(--wk-border);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 50px;
}
.wk-mgmt-item {
    background: var(--wk-surface-3);
    padding: 30px 20px;
    text-align: center;
    transition: background 0.3s ease;
}
.wk-mgmt-item:hover { background: rgba(0, 200, 83, 0.02); }
.wk-mgmt-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px; background: rgba(0, 200, 83, 0.08);
    border-radius: 50%; color: var(--wk-green); margin-bottom: 14px;
}
.wk-mgmt-item h4 { font-size: 0.9rem; font-weight: 700; color: #fff; margin-bottom: 8px; letter-spacing: 1px; }
.wk-mgmt-item p { font-size: 0.8rem; color: var(--wk-muted); line-height: 1.8; }

/* ── お客様の声（事例内） ── */
.wk-case-voice {
    background: linear-gradient(135deg, rgba(0, 200, 83, 0.04), rgba(0, 200, 83, 0.01));
    border: 1px solid rgba(0, 200, 83, 0.1);
    border-radius: 12px;
    padding: 40px;
    position: relative;
}
.wk-voice-quote {
    position: absolute; top: 20px; left: 30px;
    font-family: Georgia, serif; font-size: 4rem;
    color: rgba(0, 200, 83, 0.15); line-height: 1;
}
.wk-voice-text {
    font-size: 1rem; color: var(--wk-text); line-height: 2.2;
    padding-left: 20px; border-left: 3px solid var(--wk-green);
    margin-bottom: 16px;
}
.wk-voice-author {
    font-size: 0.8rem; color: var(--wk-muted); letter-spacing: 1px;
    text-align: right;
}

/* =============================================
   MID CTA
   ============================================= */
.wk-mid-cta {
    background: linear-gradient(135deg, #0d2818 0%, #1a3a25 100%);
    padding: 60px 0;
    text-align: center;
}
.wk-mid-cta-text {
    font-size: 1.1rem; color: rgba(255, 255, 255, 0.8); margin-bottom: 25px;
}
.wk-mid-cta-btn {
    display: inline-block; padding: 16px 40px; background: var(--wk-green);
    color: #fff; font-weight: 700; font-size: 1rem; letter-spacing: 1px;
    border-radius: 4px; transition: all 0.3s ease;
}
.wk-mid-cta-btn:hover {
    background: var(--wk-green-dark); transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 200, 83, 0.3);
}

/* =============================================
   TESTIMONIALS — お客様の声 まとめ
   ============================================= */
.wk-testimonials {
    background: var(--wk-surface-2);
    padding: 120px 0;
}
.wk-testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--wk-border);
    border: 1px solid var(--wk-border);
    border-radius: 12px;
    overflow: hidden;
    max-width: 1100px;
    margin: 0 auto;
}
.wk-testimonial {
    background: var(--wk-surface-3);
    padding: 40px 30px;
    position: relative;
    transition: background 0.3s ease;
}
.wk-testimonial:hover { background: rgba(0, 200, 83, 0.02); }
.wk-testimonial-quote {
    font-family: Georgia, serif; font-size: 3rem;
    color: rgba(0, 200, 83, 0.12); line-height: 1; margin-bottom: 16px;
}
.wk-testimonial p {
    font-size: 0.9rem; color: var(--wk-text); line-height: 2; margin-bottom: 20px;
}
.wk-testimonial-author {
    font-size: 0.75rem; color: var(--wk-muted); letter-spacing: 1px;
}
.wk-testimonial-stars {
    display: flex; gap: 2px; margin-bottom: 12px;
}
.wk-testimonial-stars svg { color: var(--wk-green); }

/* =============================================
   FINAL CTA
   ============================================= */
.wk-final-cta {
    position: relative; background: var(--wk-surface-1);
    padding: 140px 0; overflow: hidden;
}
.wk-final-cta-bg { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); pointer-events: none; }
.wk-final-bg-text {
    font-family: var(--wk-font-en); font-size: clamp(8rem, 22vw, 20rem);
    font-weight: 900; text-transform: uppercase; color: transparent;
    -webkit-text-stroke: 1px rgba(0, 200, 83, 0.04); white-space: nowrap; line-height: 1;
}
.wk-final-cta-content { position: relative; z-index: 2; max-width: 700px; margin: 0 auto; text-align: center; }
.wk-final-cta-title { font-size: clamp(1.4rem, 2.5vw, 1.8rem); font-weight: 900; color: #fff; letter-spacing: 3px; line-height: 1.6; margin-bottom: 1rem; }
.wk-final-cta-lead { font-size: 0.95rem; color: var(--wk-muted); line-height: 2; margin-bottom: 2.5rem; }
.wk-final-cta-tel-block { text-align: center; }
.wk-final-cta-tel-label { display: block; font-size: 0.75rem; color: var(--wk-muted); margin-bottom: 8px; letter-spacing: 2px; }
.wk-final-cta-tel {
    display: inline-flex; align-items: center; gap: 10px;
    font-family: var(--wk-font-en); font-size: 2rem; font-weight: 900;
    color: #fff; letter-spacing: 2px; transition: color 0.3s ease;
}
.wk-final-cta-tel:hover { color: var(--wk-green); }
.wk-final-cta-tel svg { color: var(--wk-green); }
.wk-final-cta-actions { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.wk-final-cta-btn {
    display: inline-block; padding: 16px 40px; background: var(--wk-green);
    color: #fff; font-weight: 700; font-size: 0.95rem; letter-spacing: 1px;
    border-radius: 4px; transition: all 0.3s ease;
}
.wk-final-cta-btn:hover { background: var(--wk-green-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 200, 83, 0.3); }

/* =============================================
   FIXED CTA
   ============================================= */
.wk-fixed-cta {
    position: fixed; right: 20px; bottom: 20px; z-index: 900;
    display: flex; align-items: center; gap: 8px;
    background: var(--wk-green); color: #fff;
    padding: 14px 20px; border-radius: 50px;
    font-size: 0.85rem; font-weight: 700;
    box-shadow: 0 4px 20px rgba(0, 200, 83, 0.4); transition: all 0.3s ease;
}
.wk-fixed-cta:hover { transform: scale(1.05); box-shadow: 0 6px 25px rgba(0, 200, 83, 0.5); }

.footer-links a.is-current { color: var(--wk-green); }

/* =============================================
   RESPONSIVE
   ============================================= */
@media screen and (max-width: 1024px) {
    .wk-gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .wk-case-header { grid-template-columns: 1fr; }
    .wk-case-specs { min-width: 0; }
    .wk-case-mgmt { grid-template-columns: repeat(2, 1fr); }
    .wk-testimonials-grid { grid-template-columns: 1fr; }
}

@media screen and (max-width: 767px) {
    .wk-hero { min-height: 90vh; padding: 0 0 50px; }
    .wk-hero-content { padding: 0 20px; }
    .wk-hero-accent { width: 3px; }
    .wk-wm-1 { font-size: 5rem; }
    .wk-wm-2 { font-size: 3.5rem; }
    .wk-hero-stats { max-width: 100%; padding: 20px 10px; }
    .wk-hero-stat-num { font-size: 1.8rem; }
    .wk-scroll-cue { right: 20px; bottom: 20px; }

    .wk-gallery { padding: 80px 0; }
    .wk-gallery-grid { grid-template-columns: 1fr; margin: 0 20px; border-radius: 12px; }

    .wk-case { padding: 80px 0; }
    .wk-case-inner { padding: 0 20px; }
    .wk-case-photos { grid-template-columns: 1fr; }
    .wk-case-story { grid-template-columns: 1fr; }
    .wk-case-mgmt { grid-template-columns: 1fr; }
    .wk-case-voice { padding: 30px 20px; }

    .wk-final-cta { padding: 80px 0; }
    .wk-final-cta-tel { font-size: 1.5rem; }

    .wk-fixed-cta { right: 15px; bottom: 15px; padding: 12px 16px; font-size: 0.8rem; }
}