/* ── Design Tokens ─────────────────────────────────── */
:root {
    --bg-dark:       #050507;
    --neon-pink:     #ff00ff;
    --neon-cyan:     #00ffff;
    --neon-yellow:   #ffff00;
    --text-light:    #ffffff;
    --card-bg:       rgba(15, 15, 20, 0.95);
    --font-main:     'M PLUS 1p', sans-serif;
    --font-accent:   'Bebas Neue', cursive;
    --font-mama:     'Kiwi Maru', serif;
    --section-width: 500px;
}

/* ── Reset ─────────────────────────────────────────── */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}

/* ── Base ──────────────────────────────────────────── */
body {
    font-family: var(--font-main);
    background-color: var(--bg-dark);
    color: var(--text-light);
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;

    /* 背景：ネオンカラーの幾何学模様 */
    background-image:
        radial-gradient(circle at center, transparent 0%, rgba(0,0,0,0.8) 100%),
        radial-gradient(var(--neon-pink) 1px, transparent 1.5px),
        url("data:image/svg+xml,%3Csvg width='400' height='400' viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke-width='3' stroke-linecap='round'%3E%3Cpath d='M50 50 L75 95 L25 95 Z' stroke='%23ffff00' opacity='0.3' transform='rotate(15 50 72)'/%3E%3Cpath d='M330 60 L365 115 L295 115 Z' stroke='%23ff00ff' opacity='0.2' transform='rotate(-20 330 87)'/%3E%3Cpath d='M110 310 L145 365 L75 365 Z' stroke='%2300ffff' opacity='0.2' transform='rotate(45 110 337)'/%3E%3Cpath d='M180 160 q10,-25 20,0 t20,0 t20,0 t20,0' stroke='%2300ffff' opacity='0.4'/%3E%3Cpath d='M30 220 q15,30 30,0 t30,0 t30,0' stroke='%23ffff00' opacity='0.25'/%3E%3Cpath d='M280 320 q12,-25 24,0 t24,0 t24,0 t24,0' stroke='%23ff00ff' opacity='0.4'/%3E%3C/g%3E%3C/svg%3E");
    background-size: 100% 100%, 60px 60px, 400px 400px;
}

/* ── Layout ────────────────────────────────────────── */
.container {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.content-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    width: 100%;
}

/* ── Header ────────────────────────────────────────── */
.site-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

h1 {
    font-family: var(--font-accent);
    font-size: clamp(2.5rem, 10vw, 4rem);
    color: var(--text-light);
    text-shadow: 2px 2px 0px #000, 0 0 10px var(--neon-pink), 0 0 20px var(--neon-pink);
    margin-bottom: 0.2rem;
    line-height: 1;
    letter-spacing: 0.05em;
}

.subtitle {
    font-family: var(--font-mama);
    font-weight: 500;
    color: var(--neon-cyan);
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    text-shadow: 1px 1px 2px black;
}

/* ── Mama Image ────────────────────────────────────── */
.mama-section {
    position: relative;
    width: 100%;
    max-width: var(--section-width);
}

.mama-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 5px solid var(--text-light);
    box-shadow: 8px 8px 0px var(--neon-pink);
    background: #111;
    overflow: hidden;
}

.mama-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.4s ease;
}

/* ── Interaction Section ───────────────────────────── */
.interaction-section {
    width: 100%;
    max-width: var(--section-width);
    min-height: 400px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.view-panel {
    width: 100%;
    display: none;
    flex-direction: column;
    gap: 1.2rem;
    transition: all 0.5s ease;
}

.view-panel.active {
    display: flex;
}

/* ── Cards ─────────────────────────────────────────── */
.toon-card {
    background: var(--card-bg);
    border: 3px solid var(--neon-cyan);
    padding: 1.8rem 1.5rem;
    box-shadow: 10px 10px 0px rgba(0, 255, 255, 0.2);
    text-align: center;
    backdrop-filter: blur(5px);
}

.chat-card {
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 8px 8px 0px rgba(255, 255, 255, 0.05);
    min-height: 9rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mama-chat-display {
    font-family: var(--font-mama);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-light);
    line-height: 1.7;
    transition: color 0.3s;
    white-space: pre-line;
    letter-spacing: 0.02em;
}

.welcome-active {
    color: var(--neon-yellow);
    text-shadow: 0 0 10px rgba(255, 255, 0, 0.2);
    font-weight: 700;
}

/* ── Category ──────────────────────────────────────── */
.category-card {
    border-color: var(--neon-cyan);
    opacity: 0;
    transform: translateY(15px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    display: none;
}

.category-card.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    display: block;
}

.category-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
}

.category-btn {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.3);
    padding: 1rem 0.5rem;
    font-family: var(--font-main);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
}

.category-btn:hover {
    background: var(--text-light);
    color: #000;
    border-color: var(--text-light);
    box-shadow: 0 0 12px rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

/* ── Advice Display ────────────────────────────────── */
.advice-display {
    background: #000;
    border: 4px solid var(--neon-pink);
    padding: 2.5rem 1.5rem;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    box-shadow: 0 0 25px rgba(255, 0, 255, 0.2);
}

.advice-category-tag {
    position: absolute;
    top: -15px;
    left: 20px;
    background: var(--neon-cyan);
    color: #000;
    padding: 4px 14px;
    font-family: var(--font-accent);
    font-weight: 700;
    font-size: 1rem;
    border: 2px solid #000;
    transform: rotate(-1.5deg);
}

.advice-content {
    font-family: var(--font-mama);
    font-size: 1.25rem;
    line-height: 1.7;
    color: var(--text-light);
    text-align: center;
    opacity: 0;
    transform: translateY(10px);
    letter-spacing: 0.03em;
}

.advice-content.fade-in {
    animation: adviceFadeIn 0.8s forwards ease-out;
}

@keyframes adviceFadeIn {
    to { opacity: 1; transform: translateY(0); }
}

/* ── Buttons ───────────────────────────────────────── */
.btn-next {
    align-self: center;
    padding: 0.8rem 2.5rem;
    margin-top: 0.2rem;
    background: transparent;
    border: 2px solid var(--neon-pink);
    color: var(--neon-pink);
    font-family: var(--font-accent);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    cursor: pointer;
    box-shadow: 0 0 12px rgba(255, 0, 255, 0.15);
    transition: all 0.25s cubic-bezier(0.2, 1, 0.3, 1);
    display: block;
}

.btn-next:hover {
    background: var(--neon-pink);
    color: #000;
    box-shadow: 0 0 20px var(--neon-pink);
    transform: scale(1.03);
}

.btn-next.hidden {
    display: none;
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.btn-main {
    padding: 1.1rem;
    background: transparent;
    border: 2px solid var(--neon-pink);
    color: var(--neon-pink);
    font-family: var(--font-main);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-main:hover {
    background: var(--neon-pink);
    color: #000;
    box-shadow: 0 0 15px var(--neon-pink);
}

.btn-sub {
    background: transparent;
    border: none;
    color: rgba(0, 255, 255, 0.7);
    text-decoration: underline;
    font-weight: 400;
    font-size: 0.9rem;
    padding: 0.5rem;
    cursor: pointer;
    transition: color 0.3s;
}

.btn-sub:hover {
    color: var(--neon-cyan);
}

/* ── Footer ────────────────────────────────────────── */
.site-footer {
    margin-top: 4rem;
    padding: 2.5rem 1rem;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
}

.site-footer p {
    font-size: 0.8rem;
    color: #555;
    margin-top: 1rem;
}

.footer-spacer {
    height: 10px;
}

.footer-links {
    margin-bottom: 0.5rem;
}

.footer-link {
    color: var(--neon-cyan);
    text-decoration: none;
    font-size: 0.9rem;
    cursor: pointer;
    transition: color 0.2s;
}

.footer-link:hover {
    color: var(--neon-pink);
    text-shadow: 0 0 8px var(--neon-pink);
}

/* ── Dialog ────────────────────────────────────────── */
.custom-dialog {
    background: #111;
    border: 2px solid var(--neon-cyan);
    border-radius: 12px;
    padding: 0;
    max-width: 90vw;
    width: 480px;
    margin: auto;
    box-shadow: 0 0 30px rgba(0, 255, 255, 0.3);
    color: var(--text-light);
    max-height: 85vh;
    overflow-y: auto;
}

.custom-dialog::backdrop {
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(4px);
}

.dialog-content {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.modal-title {
    font-family: var(--font-accent);
    color: var(--neon-yellow);
    font-size: 1.8rem;
    text-align: center;
    border-bottom: 1px solid #333;
    padding-bottom: 0.5rem;
}

.modal-text {
    font-family: var(--font-main);
    font-size: 0.9rem;
    line-height: 1.7;
    text-align: left;
    color: #ddd;
}

.modal-text strong {
    color: var(--neon-pink);
    display: block;
    margin-top: 1.2rem;
    font-size: 1rem;
    border-left: 3px solid var(--neon-pink);
    padding-left: 10px;
}

.close-dialog-btn {
    background: var(--neon-pink);
    border: none;
    color: #000;
    padding: 0.8rem;
    font-weight: 800;
    border-radius: 4px;
    cursor: pointer;
    transition: 0.2s;
    margin-top: 1rem;
}

.close-dialog-btn:hover {
    box-shadow: 0 0 15px var(--neon-pink);
    transform: scale(1.02);
}