/* ============================================================================
 * Kotaro Studio お問い合わせフォーム — External Stylesheet
 * パス: coldbox-child/css/contact.css
 *
 * 構造: #ks-contact (root scope)
 *   ├─ Hero (装飾的・和の格調)
 *   ├─ Form (4 fields + honeypot)
 *   │   ├─ Name input
 *   │   ├─ Email input
 *   │   ├─ Subject radio cards
 *   │   ├─ Message textarea + 文字数カウンタ
 *   │   ├─ Privacy notice
 *   │   ├─ Submit button (loading state)
 *   │   └─ Status message (success/error)
 *   └─ FAQ link / Other contact info
 *
 * ブランド: 黒 + 金 #c5a059 + 明朝 (LP・ガイド類と完全統一)
 * ============================================================================ */

#ks-contact {
	--ks-ink: #111;
	--ks-text: #333;
	--ks-muted: #666;
	--ks-gold: #c5a059;
	--ks-gold-deep: #b89b5e;
	--ks-gold-bg: rgba(197, 160, 89, 0.08);
	--ks-gold-line: rgba(197, 160, 89, 0.35);
	--ks-bg: #ffffff;
	--ks-bg-alt: #fafafa;
	--ks-bg-cream: #fdfbf3;
	--ks-line: #e6e6e6;
	--ks-error: #c92a2a;
	--ks-error-bg: #fff5f5;
	--ks-success: #2f8d6b;
	--ks-success-bg: #f0faf5;

	display: block;
	width: 100%;
	background: var(--ks-bg);
	color: var(--ks-text);
	font-family: "Hiragino Kaku Gothic ProN", "Helvetica Neue", "Yu Gothic", Arial, sans-serif;
	font-size: 16px;
	line-height: 1.95;
	letter-spacing: 0.03em;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	box-sizing: border-box;
	font-feature-settings: "palt";
}
#ks-contact *, #ks-contact *::before, #ks-contact *::after { box-sizing: border-box; }

/* ================================================================
   Hero (v2: 圧縮版・顧客が即フォームに到達できる密度)
================================================================ */
#ks-contact .ks-contact-hero {
	text-align: center;
	padding: clamp(28px, 3.5vw, 48px) clamp(20px, 4vw, 40px) clamp(20px, 2.5vw, 36px);
	background:
		linear-gradient(180deg, var(--ks-bg-cream) 0%, #ffffff 100%);
	border-bottom: 1px solid var(--ks-gold-line);
	position: relative;
	overflow: hidden;
}
#ks-contact .ks-contact-hero-inner {
	position: relative;
	z-index: 2;
	max-width: 640px;
	margin: 0 auto;
}
#ks-contact .ks-contact-eyebrow {
	display: inline-block;
	font-family: "Cormorant Garamond", serif;
	font-size: 11px;
	font-weight: 700;
	letter-spacing: 0.35em;
	color: var(--ks-gold-deep);
	text-transform: uppercase;
	margin-bottom: 10px;
}
#ks-contact .ks-contact-ornament {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 12px;
	margin: 0 auto 12px;
	max-width: 200px;
}
#ks-contact .ks-contact-ornament-line {
	flex: 1;
	height: 1px;
	background: linear-gradient(90deg, transparent, var(--ks-gold) 50%, transparent);
}
#ks-contact .ks-contact-ornament-mark {
	font-family: serif;
	font-size: 12px;
	color: var(--ks-gold-deep);
}
#ks-contact .ks-contact-title {
	font-family: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
	font-size: clamp(22px, 3vw, 30px);
	font-weight: 500;
	color: var(--ks-ink);
	margin: 0 0 10px;
	line-height: 1.5;
	letter-spacing: 0.05em;
}
#ks-contact .ks-contact-lead {
	font-size: 14px;
	color: var(--ks-muted);
	line-height: 1.85;
	margin: 0;
}

/* ================================================================
   Form Container
================================================================ */
#ks-contact .ks-contact-form-wrap {
	max-width: 720px;
	margin: 0 auto;
	padding: clamp(28px, 4vw, 50px) clamp(20px, 4vw, 40px);
}
#ks-contact .ks-contact-form {
	background:
		linear-gradient(180deg, #ffffff 0%, #fffaef 100%);
	border: 1px solid var(--ks-gold-line);
	border-radius: 2px;
	padding: clamp(36px, 5vw, 60px);
	box-shadow: 0 14px 40px rgba(197, 160, 89, 0.1);
	position: relative;
}
#ks-contact .ks-contact-form::before {
	content: '';
	position: absolute;
	top: 12px; bottom: 12px; left: 12px; right: 12px;
	border: 1px solid rgba(197, 160, 89, 0.2);
	border-radius: 1px;
	pointer-events: none;
}

/* ================================================================
   送信ルール表示 (公開ルールのみ)
================================================================ */
#ks-contact .ks-contact-rules {
	background: #fffaef;
	border: 1px solid var(--ks-gold-line);
	border-left: 3px solid var(--ks-gold);
	border-radius: 2px;
	padding: 16px 20px;
	margin-bottom: 32px;
	position: relative;
}
#ks-contact .ks-contact-rules-title {
	font-family: "Shippori Mincho", serif;
	font-size: 13px;
	font-weight: 700;
	color: var(--ks-gold-deep);
	margin: 0 0 8px;
	letter-spacing: 0.05em;
}
#ks-contact .ks-contact-rules-list {
	margin: 0;
	padding: 0 0 0 20px;
	font-size: 13px;
	color: var(--ks-text);
	line-height: 1.85;
}
#ks-contact .ks-contact-rules-list li {
	margin: 0;
	list-style: none;
	position: relative;
	padding-left: 0;
}
#ks-contact .ks-contact-rules-list li + li { margin-top: 4px; }
#ks-contact .ks-contact-rules-list li::before {
	content: '※';
	position: absolute;
	left: -18px;
	color: var(--ks-gold-deep);
	font-weight: 700;
}
#ks-contact .ks-contact-rules-list strong {
	color: var(--ks-ink);
	font-weight: 700;
	background: linear-gradient(transparent 70%, rgba(197, 160, 89, 0.25) 70%);
	padding: 0 2px;
}

/* ================================================================
   Form Field Common
================================================================ */
#ks-contact .ks-field {
	margin-bottom: 32px;
	position: relative;
}
#ks-contact .ks-field-label {
	display: block;
	font-family: "Shippori Mincho", serif;
	font-size: 15px;
	font-weight: 700;
	color: var(--ks-ink);
	margin-bottom: 12px;
	letter-spacing: 0.05em;
}
#ks-contact .ks-field-required {
	color: var(--ks-gold-deep);
	font-family: "Cormorant Garamond", serif;
	font-size: 14px;
	margin-left: 6px;
	letter-spacing: 0;
}
#ks-contact .ks-field-help {
	display: block;
	font-size: 12px;
	color: var(--ks-muted);
	margin-top: 6px;
	line-height: 1.7;
}
#ks-contact .ks-field-error {
	display: none;
	font-size: 13px;
	color: var(--ks-error);
	margin-top: 8px;
	line-height: 1.7;
	background: var(--ks-error-bg);
	padding: 10px 14px;
	border-left: 3px solid var(--ks-error);
	border-radius: 0 2px 2px 0;
}
#ks-contact .ks-field.has-error .ks-field-error { display: block; }
#ks-contact .ks-field.has-error input,
#ks-contact .ks-field.has-error textarea { border-color: var(--ks-error); }

/* Text inputs / textarea */
#ks-contact .ks-input,
#ks-contact .ks-textarea {
	width: 100%;
	padding: 14px 18px;
	border: 1px solid var(--ks-line);
	border-radius: 2px;
	background: #ffffff;
	font-family: inherit;
	font-size: 15px;
	color: var(--ks-ink);
	line-height: 1.7;
	transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
	-webkit-appearance: none;
	appearance: none;
}
#ks-contact .ks-input:hover,
#ks-contact .ks-textarea:hover { border-color: var(--ks-gold-line); }
#ks-contact .ks-input:focus,
#ks-contact .ks-textarea:focus {
	outline: none;
	border-color: var(--ks-gold);
	box-shadow: 0 0 0 3px var(--ks-gold-bg);
	background: #fffdf8;
}
#ks-contact .ks-input::placeholder,
#ks-contact .ks-textarea::placeholder {
	color: #aaa;
	font-style: italic;
}
#ks-contact .ks-textarea {
	min-height: 180px;
	resize: vertical;
	line-height: 1.95;
}

/* 文字数カウンタ */
#ks-contact .ks-char-count {
	display: block;
	text-align: right;
	font-family: "Cormorant Garamond", serif;
	font-size: 12px;
	color: var(--ks-muted);
	margin-top: 6px;
	letter-spacing: 0.05em;
}
#ks-contact .ks-char-count.is-near-limit { color: var(--ks-gold-deep); }
#ks-contact .ks-char-count.is-over-limit { color: var(--ks-error); font-weight: 700; }

/* ================================================================
   Subject Radio Cards
================================================================ */
#ks-contact .ks-subject-fieldset {
	border: none;
	padding: 0;
	margin: 0 0 32px;
}
#ks-contact .ks-radio-cards {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 12px;
	margin-top: 12px;
}
#ks-contact .ks-radio-card {
	position: relative;
	cursor: pointer;
}
#ks-contact .ks-radio-card input[type="radio"] {
	position: absolute;
	opacity: 0;
	pointer-events: none;
}
#ks-contact .ks-radio-card-inner {
	display: flex;
	align-items: center;
	gap: 14px;
	padding: 18px 20px;
	background: #ffffff;
	border: 1px solid var(--ks-line);
	border-radius: 2px;
	transition: border-color 0.25s ease, background 0.25s ease, transform 0.2s ease;
}
#ks-contact .ks-radio-card:hover .ks-radio-card-inner {
	border-color: var(--ks-gold-line);
	transform: translateY(-1px);
}
#ks-contact .ks-radio-card input:focus-visible + .ks-radio-card-inner {
	box-shadow: 0 0 0 3px var(--ks-gold-bg);
	border-color: var(--ks-gold);
}
#ks-contact .ks-radio-card input:checked + .ks-radio-card-inner {
	background: var(--ks-bg-cream);
	border-color: var(--ks-gold);
	box-shadow: inset 0 0 0 1px var(--ks-gold);
}
#ks-contact .ks-radio-dot {
	width: 18px;
	height: 18px;
	border-radius: 50%;
	border: 2px solid var(--ks-line);
	background: #ffffff;
	flex-shrink: 0;
	position: relative;
	transition: border-color 0.25s ease;
}
#ks-contact .ks-radio-card input:checked + .ks-radio-card-inner .ks-radio-dot {
	border-color: var(--ks-gold);
}
#ks-contact .ks-radio-dot::after {
	content: '';
	position: absolute;
	top: 50%; left: 50%;
	width: 8px;
	height: 8px;
	border-radius: 50%;
	background: var(--ks-gold);
	transform: translate(-50%, -50%) scale(0);
	transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
#ks-contact .ks-radio-card input:checked + .ks-radio-card-inner .ks-radio-dot::after {
	transform: translate(-50%, -50%) scale(1);
}
#ks-contact .ks-radio-text {
	font-size: 15px;
	font-weight: 700;
	color: var(--ks-ink);
	letter-spacing: 0.04em;
}

/* ================================================================
   Honeypot (隠し / ボット対策)
================================================================ */
#ks-contact .ks-honeypot {
	position: absolute;
	left: -9999px;
	width: 1px;
	height: 1px;
	overflow: hidden;
	opacity: 0;
}

/* ================================================================
   Privacy Notice
================================================================ */
#ks-contact .ks-privacy {
	font-size: 12px;
	color: var(--ks-muted);
	line-height: 1.85;
	margin: 24px 0;
	padding: 16px 20px;
	background: var(--ks-bg-cream);
	border-left: 3px solid var(--ks-gold);
	border-radius: 0 2px 2px 0;
}

/* ================================================================
   Submit Button
================================================================ */
#ks-contact .ks-submit-wrap {
	text-align: center;
	margin-top: 36px;
}
#ks-contact .ks-submit {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 14px;
	min-width: 280px;
	padding: 20px 48px;
	background: linear-gradient(135deg, #f5e7ba 0%, var(--ks-gold) 50%, var(--ks-gold-deep) 100%);
	color: var(--ks-ink);
	border: 1px solid var(--ks-gold-deep);
	border-radius: 2px;
	font-family: "Hiragino Kaku Gothic ProN", sans-serif;
	font-weight: 700;
	font-size: 16px;
	letter-spacing: 0.12em;
	cursor: pointer;
	transition: transform 0.3s ease, box-shadow 0.3s ease;
	box-shadow:
		0 10px 28px rgba(197, 160, 89, 0.35),
		inset 0 1px 0 rgba(255, 255, 255, 0.5);
	position: relative;
	overflow: hidden;
}
#ks-contact .ks-submit:hover {
	transform: translateY(-2px);
	box-shadow:
		0 14px 34px rgba(197, 160, 89, 0.45),
		inset 0 1px 0 rgba(255, 255, 255, 0.6);
}
#ks-contact .ks-submit:active { transform: translateY(0); }
#ks-contact .ks-submit:disabled {
	cursor: not-allowed;
	opacity: 0.7;
	transform: none;
}
#ks-contact .ks-submit::after {
	content: '→';
	font-family: "Cormorant Garamond", serif;
	font-size: 22px;
	transition: transform 0.3s ease;
}
#ks-contact .ks-submit:hover::after { transform: translateX(4px); }
#ks-contact .ks-submit.is-loading::after { display: none; }

/* Loading spinner */
#ks-contact .ks-spinner {
	display: none;
	width: 18px;
	height: 18px;
	border: 2px solid rgba(17, 17, 17, 0.2);
	border-top-color: var(--ks-ink);
	border-radius: 50%;
	animation: ks-spin 0.8s linear infinite;
}
#ks-contact .ks-submit.is-loading .ks-spinner { display: inline-block; }
@keyframes ks-spin {
	to { transform: rotate(360deg); }
}

/* ================================================================
   Status (Success / Error)
================================================================ */
#ks-contact .ks-status {
	margin-top: 32px;
	padding: 24px 28px;
	border-radius: 2px;
	font-size: 15px;
	line-height: 1.95;
	display: none;
	position: relative;
	animation: ks-status-in 0.4s ease-out;
}
@keyframes ks-status-in {
	from { opacity: 0; transform: translateY(-8px); }
	to { opacity: 1; transform: translateY(0); }
}
#ks-contact .ks-status.is-visible { display: block; }
#ks-contact .ks-status--success {
	background: var(--ks-success-bg);
	border: 1px solid rgba(47, 141, 107, 0.3);
	border-left: 4px solid var(--ks-success);
	color: #1a5f48;
}
#ks-contact .ks-status--success strong { color: var(--ks-success); }
#ks-contact .ks-status--error {
	background: var(--ks-error-bg);
	border: 1px solid rgba(201, 42, 42, 0.3);
	border-left: 4px solid var(--ks-error);
	color: #8a1f1f;
}
#ks-contact .ks-status--error strong { color: var(--ks-error); }

/* ================================================================
   Alternative Contact Info
================================================================ */
#ks-contact .ks-contact-other {
	max-width: 720px;
	margin: 0 auto;
	padding: 0 clamp(20px, 4vw, 40px) clamp(60px, 8vw, 100px);
	text-align: center;
}
#ks-contact .ks-contact-other-eyebrow {
	font-family: "Cormorant Garamond", serif;
	font-size: 11px;
	letter-spacing: 0.32em;
	color: var(--ks-gold-deep);
	text-transform: uppercase;
	margin-bottom: 14px;
	display: block;
}
#ks-contact .ks-contact-other-title {
	font-family: "Shippori Mincho", serif;
	font-size: 20px;
	font-weight: 500;
	color: var(--ks-ink);
	margin: 0 0 16px;
	letter-spacing: 0.04em;
}
#ks-contact .ks-contact-other-text {
	font-size: 14px;
	color: var(--ks-text);
	line-height: 2.05;
	margin: 0 0 24px;
}
#ks-contact .ks-contact-faq-link {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	padding: 12px 30px;
	color: var(--ks-ink);
	border: 1px solid var(--ks-ink);
	background: transparent;
	border-radius: 2px;
	text-decoration: none;
	font-size: 14px;
	font-weight: 700;
	letter-spacing: 0.06em;
	transition: background 0.25s ease, color 0.25s ease, transform 0.2s ease;
}
#ks-contact .ks-contact-faq-link:hover {
	background: linear-gradient(135deg, #fffaef 0%, var(--ks-bg-cream) 100%);
	border-color: var(--ks-gold);
	transform: translateY(-2px);
}
#ks-contact .ks-contact-faq-link::after {
	content: '→';
	font-family: "Cormorant Garamond", serif;
	color: var(--ks-gold-deep);
	font-size: 16px;
}

/* ================================================================
   Mobile
================================================================ */
@media (max-width: 600px) {
	#ks-contact .ks-radio-cards { grid-template-columns: 1fr; }
	#ks-contact .ks-contact-form { padding: 28px 22px; }
	#ks-contact .ks-contact-form::before { top: 8px; bottom: 8px; left: 8px; right: 8px; }
	#ks-contact .ks-submit { min-width: auto; width: 100%; padding: 18px 28px; }
}

/* reduced-motion */
@media (prefers-reduced-motion: reduce) {
	#ks-contact *,
	#ks-contact *::before,
	#ks-contact *::after { transition: none !important; animation: none !important; }
}