:root {
    --bg-color: #fdfaf0;
    --text-color: #2f2f24;
    --header-bg: #ebd3a2;
    --header-text: #2f2f24;
    --master-red: #ae5224;
    --accent-color: #064f6e;
    --card-bg: #ffffff;
    --border-color: #2f2f24;
    --stat-bg: #ebd3a2;
    --stat-text: #2f2f24;
    --note-bg: #2f2f24;
    --note-text: #ebd3a2;
    /* Metal Effects */
    --metal-shimmer: linear-gradient(135deg, rgba(255,255,255,0.4) 0%, rgba(255,255,255,0) 50%, rgba(0,0,0,0.05) 100%);
    --rvs-texture: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

[data-theme="dark"] {
    --bg-color: #000000;
    --text-color: #ebd3a2;
    --header-bg: #000000;
    --header-text: #ebd3a2;
    --master-red: #ae5224;
    --accent-color: #064f6e;
    --card-bg: #000000;
    --border-color: #2f2f24;
    --stat-bg: #000000;
    --stat-text: #ebd3a2;
    --note-bg: #050505;
    --note-text: #ebd3a2;
}

html {
    scroll-behavior: smooth;
    max-width: 100%;
    overflow-x: hidden;
    background-color: #000000;
    /* Subtle scanline/grain effect for brutalist feel */
    background-image: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.1) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.02), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.02));
    background-size: 100% 4px, 3px 100%;
}

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

body {
    background-color: #000000; /* Full frame black */
    color: var(--text-color);
    font-family: 'IBM Plex Mono', monospace;
    line-height: 1.4;
    max-width: 100%;
    overflow-x: hidden;
}

/* ─── TEXTURES ────────────────────────────────────── */

.page-home .main-header,
.about-section,
.main-footer {
    position: relative;
}

.about-section::after {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: var(--rvs-texture);
    opacity: 0.04;
    pointer-events: none;
    z-index: 1;
}

/* ─── NAV ─────────────────────────────────────────── */

.main-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-color);
    border-bottom: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 clamp(12px, 2.5vw, 40px);
    height: 72px;
    transition: background-color 0.3s ease;
    max-width: 1200px;
    margin: 0 auto;
}

/* Home specific full-width nav */
.page-home .main-nav {
    max-width: 100%;
    background: #ffffff;
}

.page-home .nav-links {
    display: none;
}

[data-theme="dark"] .page-home .main-nav {
    background: #000000;
}

@media (min-width: 1240px) {
    .main-nav {
        border-left: 2px solid var(--border-color);
        border-right: 2px solid var(--border-color);
    }
    
    /* Remove borders for home full-width nav */
    .page-home .main-nav {
        border-left: none;
        border-right: none;
    }
}

.nav-brand {
    font-family: 'Dela Gothic One', cursive;
    font-size: 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    letter-spacing: 1px;
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    gap: clamp(10px, 2.2vw, 32px);
}

.nav-link {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 1px;
    color: var(--text-color);
    text-decoration: none;
    opacity: 0.45;
    transition: opacity 0.2s;
    white-space: nowrap;
}

.nav-link:hover { opacity: 0.8; }
.nav-link.active { opacity: 1; color: var(--accent-color); }

.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0.5;
    flex-shrink: 0;
    transition: all 0.2s;
}

.theme-toggle:hover { opacity: 1; border-color: var(--accent-color); color: var(--accent-color); }

.sun-icon { display: none; }
.moon-icon { display: block; }

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

@media (max-width: 480px) {
    .main-nav { 
        height: 56px; 
        padding: 0 10px; 
    }
    .nav-brand {
        font-size: 1.2rem;
        margin-right: 8px;
    }
    .nav-links {
        flex: 1;
        min-width: 0;
        gap: 10px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        padding: 4px 0;
        scrollbar-width: none;
    }
    .nav-links::-webkit-scrollbar { display: none; }

    .nav-link { font-size: 0.7rem; letter-spacing: 0.5px; white-space: nowrap; }
    
    .theme-toggle {
        width: 26px;
        height: 26px;
        margin-left: 6px;
    }
}


/* ─── WRAPPER ─────────────────────────────────────── */

.app-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    min-height: calc(100vh - 72px);
    display: flex;
    flex-direction: column;
    background-color: var(--bg-color); /* Thematic content background */
}

#content {
    flex: 1; /* Pushes footer to the bottom */
}

@media (max-width: 480px) {
    .app-wrapper {
        min-height: calc(100vh - 60px);
    }
}

@media (min-width: 1240px) {
    .app-wrapper {
        border-left: 2px solid var(--border-color);
        border-right: 2px solid var(--border-color);
    }
}

/* ─── HEADER / HERO ───────────────────────────────── */

.main-header {
    background:
        linear-gradient(160deg, rgba(180, 215, 235, 0.09) 0%, transparent 55%),
        linear-gradient(180deg, rgba(255,255,255,0.14) 0%, transparent 28%),
        var(--header-bg);
    border-bottom: 4px solid var(--border-color);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.35), inset 0 -1px 0 rgba(0,0,0,0.08);
    position: relative;
    overflow: hidden;
    color: var(--header-text);
}

/* Texture Layer */
.main-header::before {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: var(--rvs-texture);
    opacity: 0.04;
    pointer-events: none;
    z-index: 1;
}

.header-inner {
    padding: clamp(48px, 8vw, 96px) clamp(24px, 5vw, 72px) clamp(40px, 6vw, 80px);
    text-align: center;
    position: relative;
    z-index: 2;
    min-height: 200px;
}

.header-corner {
    position: absolute;
    width: 40px;
    height: 40px;
    z-index: 3;
    pointer-events: none;
}
.header-corner.tl { top: 20px; left: 20px; border-left: 2px solid var(--border-color); border-top: 2px solid var(--border-color); }
.header-corner.tr { top: 20px; right: 20px; border-right: 2px solid var(--border-color); border-top: 2px solid var(--border-color); }
.header-corner.bl { bottom: 20px; left: 20px; border-left: 2px solid var(--border-color); border-bottom: 2px solid var(--border-color); }
.header-corner.br { bottom: 20px; right: 20px; border-right: 2px solid var(--border-color); border-bottom: 2px solid var(--border-color); }

.scroll-hint {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 1.2rem;
    color: var(--master-red);
    opacity: 0.55;
    animation: bounce 2s infinite;
    z-index: 3;
    pointer-events: none;
}

.brand-line {
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 900;
    font-size: clamp(1rem, 2.5vw, 2.2rem);
    color: var(--master-red);
    letter-spacing: 0.1em;
    margin-bottom: 4px;
    line-height: 1.2;
}

.brand-line--bottom {
    margin-bottom: 0;
    margin-top: 16px;
    font-size: clamp(0.85rem, 1.8vw, 1.6rem);
    opacity: 0.6;
}

.brand-name {
    font-family: 'Dela Gothic One', cursive;
    font-size: clamp(2.4rem, 10vw, 9rem);
    line-height: 0.95;
    letter-spacing: -0.015em;
    background: linear-gradient(
        170deg,
        #5a5a48 0%,
        #2f2f24 30%,
        #1a1a12 65%,
        #3d3d2e 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-tagline {
    display: flex;
    justify-content: center;
    margin-top: 24px;
}

.brand-tagline span {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 700;
    font-size: clamp(0.7rem, 1.5vw, 0.95rem);
    letter-spacing: 4px;
    color: var(--accent-color);
    line-height: 1;
    display: inline-block;
}

.header-info {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: clamp(0.6rem, 1.2vw, 0.8rem);
    font-weight: 700;
    letter-spacing: 0.5px;
    opacity: 0.6;
    color: var(--header-text);
}

.info-sep { opacity: 0.35; }

/* ─── PAGE NAV TILES (index) ──────────────────────── */

.page-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.page-nav-item {
    display: block;
    padding: clamp(48px, 8vw, 84px) clamp(24px, 4vw, 48px);
    border-right: 1px solid var(--border-color);
    text-decoration: none;
    color: var(--text-color);
    transition: background 0.2s;
}

.page-nav-item:last-child { border-right: none; }

.page-nav-item:hover {
    background: var(--stat-bg);
}

.page-nav-num {
    font-family: 'Dela Gothic One', cursive;
    font-size: clamp(2rem, 5vw, 3.5rem);
    color: var(--accent-color);
    opacity: 1;
    line-height: 1;
    display: block;
}

.page-nav-title {
    font-family: 'Dela Gothic One', cursive;
    font-size: clamp(1rem, 2.8vw, 1.6rem);
    letter-spacing: 0;
    display: block;
    margin-top: 4px;
    color: var(--text-color);
}

.page-nav-sub {
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 900;
    font-size: clamp(0.65rem, 1.2vw, 0.8rem);
    opacity: 0.4;
    display: block;
    margin-top: 2px;
}

@media (max-width: 580px) {
    .page-nav { grid-template-columns: 1fr; }
    .page-nav-item { border-right: none; border-bottom: 1px solid var(--border-color); }
    .page-nav-item:last-child { border-bottom: none; }
}

/* ─── ABOUT (index) ───────────────────────────────── */

.about-section {
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
}

@media (min-width: 700px) {
    .about-grid { grid-template-columns: auto 1fr; }
}

.about-deco {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(48px, 8vw, 84px) clamp(32px, 6vw, 64px);
    border-bottom: 2px solid var(--border-color);
    background: var(--stat-bg);
    color: var(--stat-text);
}

@media (min-width: 900px) {
    .about-grid {
        grid-template-columns: 240px 1fr 80px;
    }
    
    .about-deco {
        border-bottom: none;
        border-right: 2px solid var(--border-color);
        flex-direction: column;
        padding: 84px 48px;
        justify-content: flex-start;
        min-width: 240px;
    }

    .about-grid::after {
        content: "QUALITY CONTROL ｜ BATCH #001 ｜ TAIWAN TRADITION";
        writing-mode: vertical-rl;
        padding: 48px 20px;
        font-family: 'IBM Plex Mono', monospace;
        font-size: 0.65rem;
        font-weight: 700;
        letter-spacing: 4px;
        text-transform: uppercase;
        opacity: 0.15;
        border-left: 1px dashed var(--border-color);
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

.deco-char {
    font-family: 'Noto Sans TC', sans-serif;
    font-size: clamp(6rem, 12vw, 12rem);
    font-weight: 900;
    line-height: 0.9;
    opacity: 0.08;
    color: var(--text-color);
}
.about-text {
    padding: clamp(32px, 6vw, 64px) clamp(24px, 8vw, 96px);
    animation: slideInUp 0.8s ease-out;
}

.about-title {
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 900;
    font-size: clamp(4rem, 12vw, 9rem);
    color: var(--master-red);
    opacity: 0.06;
    margin-bottom: -0.15em;
    line-height: 0.8;
    letter-spacing: -0.02em;
    pointer-events: none;
    user-select: none;
    text-align: right; /* Push away from the deco-char */
}

.about-text p {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    line-height: 1.8;
    margin-bottom: 28px;
    max-width: 600px;
    opacity: 0.85;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 32px;
    margin-top: 56px;
    border: 2px solid var(--border-color);
    border-top-color: rgba(255,255,255,0.4);
    border-left-color: rgba(255,255,255,0.4);
    box-shadow: 2px 2px 0px rgba(0,0,0,0.1);
    padding: 32px;
    background: rgba(235, 211, 162, 0.05);
    background-image: var(--metal-shimmer);
    position: relative;
    width: 100%;
}

@media (min-width: 900px) {
    .about-stats {
        grid-template-columns: repeat(3, auto);
        width: auto;
        gap: 64px;
        padding: 32px 48px;
    }
}

.about-stats::before {
    content: "BATCH SPECIFICATIONS";
    position: absolute;
    top: -10px;
    left: 20px;
    background: var(--bg-color);
    padding: 0 10px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 2px;
    opacity: 0.5;
}

.about-stat-num {
    font-family: 'Dela Gothic One', cursive;
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    color: var(--accent-color);
    line-height: 1;
    display: block;
}

.about-stat-label {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 700;
    font-size: 0.7rem;
    letter-spacing: 1.5px;
    opacity: 0.5;
    display: block;
    margin-top: 8px;
}


/* ─── TAIWAN SIGN ─────────────────────────────────── */

.tw-sign {
    background: var(--master-red);
    border-bottom: 4px solid #7a3118;
    padding: clamp(20px, 4vw, 36px) clamp(24px, 5vw, 64px);
}

.tw-sign-zh {
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 900;
    font-size: clamp(2rem, 6vw, 4.5rem);
    color: #ffffff;
    line-height: 1;
    letter-spacing: 0.08em;
    display: block;
}

.tw-sign-sub {
    font-family: 'IBM Plex Mono', monospace;
    font-size: clamp(0.65rem, 1.2vw, 0.8rem);
    font-weight: 700;
    letter-spacing: 2px;
    color: rgba(255,255,255,0.5);
    display: block;
    margin-top: 6px;
}

/* ─── MENU BOARD ──────────────────────────────────── */

.menu-board {
    margin-top: 48px;
    border: 2px solid var(--border-color);
    overflow: hidden;
}

.menu-board-header {
    background: var(--master-red);
    color: #fff;
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 900;
    font-size: clamp(0.75rem, 1.5vw, 0.9rem);
    letter-spacing: 3px;
    padding: 8px 20px;
    text-align: center;
}

.menu-board-items {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

.menu-board-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 12px;
    border-right: 1px solid var(--border-color);
    gap: 4px;
    text-align: center;
}

.menu-board-item:last-child { border-right: none; }

.menu-item-zh {
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 900;
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--master-red);
    line-height: 1;
}

.menu-item-name {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    opacity: 0.45;
}

.menu-item-spec {
    font-family: 'Dela Gothic One', cursive;
    font-size: clamp(1.4rem, 3.5vw, 2rem);
    color: var(--accent-color);
    line-height: 1;
    margin-top: 4px;
}
/* ─── SECTION TITLE ───────────────────────────────── */

.section-title {
    font-family: 'Dela Gothic One', cursive;
    font-size: clamp(1.2rem, 3vw, 2.2rem);
    background: var(--stat-bg);
    color: var(--stat-text);
    padding: 16px 80px 16px clamp(16px, 4vw, 40px);
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 2px solid var(--border-color);
    line-height: 1.2;
    flex-wrap: wrap;
}

[data-theme="dark"] .section-title {
    border-left: 5px solid var(--accent-color);
    background: transparent;
}

.section-title ruby {
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 400;
}

/* ─── TYPOGRAPHY ──────────────────────────────────── */

ruby { 
    position: relative;
    display: inline-block;
    vertical-align: middle;
}

rt {
    position: absolute;
    left: 100%;
    bottom: 0.4em;
    margin-left: 12px;
    display: block;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.55em;
    font-weight: 700;
    color: var(--master-red);
    opacity: 0.4;
    letter-spacing: 0.1em;
    line-height: 1;
    transition: opacity 0.4s ease, transform 0.4s ease;
    white-space: nowrap;
    pointer-events: none;
}

.fade-pinyin:hover rt,
.fade-pinyin:active rt {
    opacity: 1;
    transform: translateX(4px);
}

/* ─── CALCULATOR ──────────────────────────────────── */

.calculator-card {
    padding: clamp(48px, 8vw, 96px) clamp(24px, 6vw, 72px);
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    max-width: 850px;
    margin: 40px auto;
}

.input-group {
    margin-bottom: 64px;
}

.input-group label:not(.strength-selector label) {
    font-family: 'Dela Gothic One', cursive;
    font-size: clamp(1rem, 2.2vw, 1.4rem);
    color: var(--master-red);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
    line-height: 1.2;
    flex-wrap: wrap;
}

.input-group label ruby { font-family: 'Noto Sans TC', sans-serif; font-weight: 400; font-size: 0.55em; }

.strength-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border: 2px solid var(--border-color);
    margin-bottom: 40px;
}

.strength-selector input[type="radio"] { display: none; }

.strength-selector label {
    background: transparent;
    border: none;
    border-right: 2px solid var(--border-color);
    color: var(--text-color);
    padding: 20px;
    text-align: center;
    font-family: 'Dela Gothic One', cursive;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 1px;
    display: block;
}

.strength-selector label:last-child { border-right: none; }

.strength-selector input[type="radio"]:checked + label {
    background: var(--accent-color);
    color: #ffffff;
}

[data-theme="dark"] .strength-selector input[type="radio"]:checked + label {
    background: var(--master-red);
}

.value-display {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 300;
    font-size: clamp(3.2rem, 12vw, 7.5rem);
    text-align: center;
    line-height: 1;
    color: var(--text-color);
    margin-bottom: 24px;
    max-width: 100%;
    overflow: hidden;
}

input[type=range] {
    width: 100%;
    max-width: 100%;
    height: 44px;
    appearance: none;
    background: transparent;
    cursor: pointer;
}

input[type=range]::-webkit-slider-runnable-track { 
    background: var(--border-color); 
    height: 2px; 
}
input[type=range]::-webkit-slider-thumb {
    appearance: none;
    height: 24px; width: 48px; /* Industrial slider knob shape */
    background: var(--accent-color);
    border: 2px solid var(--border-color);
    margin-top: -12px;
    border-radius: 2px;
    cursor: ew-resize;
}
input[type=range]::-moz-range-track { background: var(--border-color); height: 2px; }
input[type=range]::-moz-range-thumb {
    height: 24px; width: 48px;
    background: var(--accent-color);
    border: 2px solid var(--border-color);
    border-radius: 2px;
    cursor: ew-resize;
}

.sakura-warning {
    display: none;
    background: var(--master-red);
    color: #fff;
    padding: 16px;
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 700;
    font-size: clamp(0.85rem, 2vw, 1.1rem);
    text-align: center;
    margin: 32px 0;
    line-height: 1.5;
}

.stats-row {
    display: grid;
    grid-template-columns: 1fr;
    border: 1px solid var(--border-color);
    margin-top: 48px;
    background: transparent;
    color: var(--text-color);
}

.stat {
    padding: 32px 24px;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.stat label {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 700;
    font-size: clamp(0.7rem, 2vw, 0.9rem);
    color: var(--master-red);
    letter-spacing: 1px;
    margin-bottom: 12px;
    display: block;
}

.stat-value {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 300;
    font-size: clamp(1.8rem, 6vw, 3.4rem);
    color: inherit;
    line-height: 1;
}

@media (min-width: 500px) {
    .stats-row { grid-template-columns: repeat(3, 1fr); }
    .stat { border-bottom: none; border-right: 1px solid var(--border-color); }
    .stat:last-child { border-right: none; }
}

/* ─── PROCESS STEPS ───────────────────────────────── */

.process-step {
    padding: clamp(48px, 8vw, 96px) clamp(32px, 8vw, 96px);
    border-bottom: 1px dashed var(--border-color);
    width: 100%;
}

.process-step:last-child { border-bottom: none; }

.process-step h3,
.process-step p {
    max-width: 720px; /* Keep text measure readable */
}

.process-step[data-step]::before {
    content: "#" attr(data-step);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-color);
    opacity: 0.5;
    display: block;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

[data-theme="dark"] .process-step[data-step]::before {
    color: #4da3c4; /* Brighter blue for dark mode */
    opacity: 0.3; /* Increased visibility */
}


.process-step h3 {
    font-family: 'Dela Gothic One', cursive;
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    color: var(--master-red);
    margin-bottom: 16px;
}

.process-step h3 ruby { font-family: 'Noto Sans TC', sans-serif; font-weight: 400; font-size: 0.65em; }
.process-step h3 rt { font-size: 0.45em; }

.process-step p {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    line-height: 1.85;
}

/* ─── PRO NOTES ───────────────────────────────────── */

.pro-notes {
    background: transparent;
    color: var(--text-color);
}

.pro-notes .section-title {
    background: var(--stat-bg);
    color: var(--stat-text);
}

[data-theme="dark"] .pro-notes .section-title {
    background: transparent;
    border-left: 8px solid var(--accent-color);
}

.notes-grid {
    display: grid;
    grid-template-columns: 1fr;
}

@media (min-width: 700px) {
    .notes-grid { 
        grid-template-columns: repeat(3, 1fr); 
    }
}

.note-item {
    font-size: clamp(1.05rem, 2.5vw, 1.25rem);
    padding: clamp(40px, 6vw, 72px) clamp(24px, 5vw, 48px);
    border-bottom: 1px dashed var(--border-color);
    line-height: 1.7;
}

@media (min-width: 700px) {
    .note-item { 
        border-bottom: none; 
        border-right: 1px dashed var(--border-color); 
    }
    .note-item:last-child { border-right: none; }
}

.note-item strong {
    font-family: 'Dela Gothic One', cursive;
    font-size: clamp(1.5rem, 3.5vw, 2rem);
    color: var(--master-red);
    display: block;
    margin-bottom: 16px;
    line-height: 1.2;
}

[data-theme="dark"] .note-item {
    border-color: rgba(235, 211, 162, 0.2);
}

/* ─── BATCHES ─────────────────────────────────────── */

.batches-section {
    padding: clamp(32px, 6vw, 64px) clamp(24px, 5vw, 64px);
}

.batches-intro {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    opacity: 0.7;
    margin-bottom: 40px;
    max-width: 640px;
    line-height: 1.7;
}

.batch-table {
    width: 100%;
    border-collapse: collapse;
    font-family: 'IBM Plex Mono', monospace;
    font-size: clamp(0.8rem, 1.8vw, 0.95rem);
}

.batch-table th {
    font-weight: 700;
    font-size: 0.7rem;
    letter-spacing: 1.5px;
    opacity: 0.45;
    text-align: left;
    padding: 0 16px 12px 0;
    border-bottom: 2px solid var(--border-color);
}

.batch-table td {
    padding: 20px 16px 20px 0;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.batch-num {
    font-family: 'Dela Gothic One', cursive;
    font-size: 1.2rem;
    color: var(--accent-color);
}

.batch-status {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.status-soaking { background: var(--accent-color); color: #fff; }
.status-cooking { background: var(--master-red); color: #fff; }
.status-done    { background: transparent; color: var(--text-color); border: 1px solid var(--border-color); opacity: 0.6; }
.status-failed  { background: #000; color: #fff; }

/* ─── FOOTER ──────────────────────────────────────── */

.main-footer {
    border-top: 4px solid var(--border-color);
    padding: clamp(80px, 12vw, 160px) clamp(32px, 8vw, 120px);
    background: var(--header-bg);
    color: var(--header-text);
}

.footer-inner {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}

.footer-brand {
    font-family: 'Dela Gothic One', Impact, sans-serif;
    font-size: clamp(3rem, 9vw, 7rem);
    letter-spacing: 2px;
    line-height: 1;
}

.footer-detail {
    display: flex;
    gap: clamp(32px, 8vw, 80px);
    margin-top: 8px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-term {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.footer-zh {
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 900;
    font-size: clamp(1.2rem, 3vw, 2rem);
    color: var(--master-red);
    line-height: 1;
}

.footer-pinyin {
    font-family: 'IBM Plex Mono', monospace;
    font-size: clamp(0.65rem, 1.2vw, 0.8rem);
    color: var(--accent-color);
    letter-spacing: 1px;
    opacity: 0.8;
}

.footer-en {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 700;
    font-size: clamp(0.6rem, 1vw, 0.75rem);
    letter-spacing: 2px;
    opacity: 0.4;
    text-transform: uppercase;
}

.footer-copy {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 700;
    font-size: 0.7rem;
    letter-spacing: 1.5px;
    opacity: 0.3;
    margin-top: 16px;
}

.footer-link {
    color: inherit;
    text-decoration: none;
    transition: opacity 0.2s, color 0.2s;
}

.footer-link:hover {
    opacity: 1;
    color: var(--accent-color);
}

/* ─── SHOP ────────────────────────────────────────── */

.shop-section {
    min-height: 80vh;
}

.shop-funnel {
    padding: clamp(32px, 6vw, 64px) clamp(24px, 5vw, 48px);
    max-width: 900px;
    margin: 0 auto;
}

.funnel-progress {
    display: flex;
    justify-content: space-between;
    margin-bottom: 60px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.progress-step {
    font-family: 'Dela Gothic One', sans-serif;
    font-size: 0.85rem;
    letter-spacing: 2px;
    opacity: 0.3;
    position: relative;
}

.progress-step.active {
    opacity: 1;
    color: var(--accent-color);
}

.progress-step.active::after {
    content: "";
    position: absolute;
    bottom: -13px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent-color);
}

.shop-step {
    display: none;
}

.shop-step.active {
    display: block;
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.step-heading {
    font-family: 'Dela Gothic One', sans-serif;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    margin-bottom: 40px;
    color: var(--text-color);
    text-align: center;
}

/* Step 1: Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.product-card {
    border: 2px solid var(--border-color);
    border-top-color: rgba(255,255,255,0.4);
    border-left-color: rgba(255,255,255,0.4);
    box-shadow: 2px 2px 0px rgba(0,0,0,0.1);
    padding: 0;
    text-align: center;
    transition: transform 0.2s, background 0.2s;
    cursor: pointer;
    background: var(--card-bg);
    background-image: var(--metal-shimmer);
    background-size: cover;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    background: var(--stat-bg);
    background-image: var(--metal-shimmer);
    transform: translateY(-4px);
}

.product-image {
    width: 100%;
    height: 240px;
    background: var(--stat-bg);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 24px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    mix-blend-mode: multiply;
    transition: transform 0.6s cubic-bezier(0.165, 0.84, 0.44, 1);
}

[data-theme="dark"] .product-image img {
    mix-blend-mode: normal;
    opacity: 0.9;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-name {
    font-family: 'Dela Gothic One', sans-serif;
    font-size: 1.6rem;
    margin-bottom: 12px;
    color: var(--master-red);
}

.product-desc {
    font-size: 0.95rem;
    line-height: 1.6;
    opacity: 0.7;
    margin-bottom: 24px;
    flex: 1;
}

.select-btn, .checkout-btn {
    width: 100%;
    padding: 16px;
    background: var(--accent-color);
    color: #ffffff;
    border: none;
    font-family: 'Dela Gothic One', sans-serif;
    font-size: 1.1rem;
    letter-spacing: 2px;
    cursor: pointer;
    transition: opacity 0.2s;
}

.select-btn:hover, .checkout-btn:hover {
    opacity: 0.9;
}

/* Step 2: Frequency Grid */
.frequency-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    max-width: 500px;
    margin: 0 auto 40px;
}

.option-card {
    border: 1px solid var(--border-color);
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s;
}

.option-card:hover {
    background: var(--stat-bg);
}

.option-card.selected {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

.option-title {
    font-family: 'Dela Gothic One', sans-serif;
    font-size: 1.4rem;
    letter-spacing: 1px;
}

.option-sub {
    font-size: 0.8rem;
    opacity: 0.6;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Step 3: Checkout */
.checkout-card {
    max-width: 500px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
    padding: 40px;
    background: var(--card-bg);
}

.quantity-selector {
    margin-bottom: 32px;
    text-align: center;
}

.quantity-selector label {
    font-family: 'Dela Gothic One', sans-serif;
    font-size: 1rem;
    display: block;
    margin-bottom: 16px;
    opacity: 0.6;
}

.qty-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.qty-controls button {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
}

#qty-value {
    font-family: 'Dela Gothic One', sans-serif;
    font-size: 3rem;
    min-width: 40px;
}

.order-summary {
    border-top: 1px solid var(--border-color);
    padding-top: 32px;
    margin-bottom: 32px;
}

.summary-line {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    margin-bottom: 12px;
    opacity: 0.7;
}

.summary-total {
    display: flex;
    justify-content: space-between;
    font-family: 'Dela Gothic One', sans-serif;
    font-size: 1.8rem;
    margin-top: 24px;
    color: var(--master-red);
}

.deposit-notice {
    font-size: 0.75rem;
    opacity: 0.5;
    margin-top: 16px;
    font-style: italic;
}

.step-nav {
    display: flex;
    justify-content: center;
    margin-top: 32px;
}

.back-btn {
    background: transparent;
    border: none;
    color: var(--text-color);
    font-family: 'Dela Gothic One', sans-serif;
    font-size: 0.9rem;
    letter-spacing: 1px;
    cursor: pointer;
    opacity: 0.5;
    text-decoration: underline;
}

.back-btn:hover { opacity: 1; }

@media (max-width: 600px) {
    .product-grid { grid-template-columns: 1fr; }
    .checkout-card { padding: 24px; }
}

/* ─── HOME RADICAL REDESIGN ───────────────────────── */

.page-home .app-wrapper {
    max-width: 100%;
    margin: 0;
    border-left: none;
    border-right: none;
}

.page-home .main-header {
    height: calc(100vh - 72px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-bottom: none;
    position: relative;
    padding-bottom: 0; /* Nav will take this space */
}

.page-home .header-inner {
    padding: 0 48px;
    margin-bottom: 84px; /* Space for the floating-ish nav if needed */
}

/* Position nav items at the bottom on home */
.page-home .page-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: #ffffff;
    border-top: 2px solid var(--border-color);
    z-index: 1000;
}

.page-home .page-nav-item {
    background: #ffffff;
    border-right: 1px solid var(--border-color);
}

.page-home .page-nav-item:hover {
    background: var(--bg-color);
}

.page-home .page-nav-num {
    color: var(--accent-color);
    opacity: 1;
}

.page-home .page-nav-title {
    color: var(--text-color);
}

.page-home .page-nav-sub rt {
    color: var(--master-red);
}

/* Ensure OLED black in dark mode for the body but header stays full-vibe */
[data-theme="dark"] .page-home .main-header {
    background: #000;
}

[data-theme="dark"] .page-home .page-nav {
    background: #000;
    border-top-color: var(--border-color);
}

[data-theme="dark"] .page-home .page-nav-item {
    background: #000;
    border-right-color: rgba(235, 211, 162, 0.1);
}

[data-theme="dark"] .page-home .page-nav-item:hover {
    background: #111;
}

[data-theme="dark"] .page-home .page-nav-num {
    color: #4da3c4; /* Brighter blue for dark mode contrast */
}

@media (max-width: 580px) {
    .page-home .main-header {
        height: 75vh;
        min-height: 500px;
        padding-top: 40px;
        padding-bottom: 0;
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    .page-home .page-nav {
        position: static;
        display: flex;
        flex-direction: column;
    }

    .page-home .page-nav-item {
        width: 100%;
        padding: 24px 20px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        display: flex;
        align-items: center;
        gap: 24px;
    }

    .page-home .page-nav-num {
        font-size: 2rem;
        min-width: 40px;
    }

    .page-home .page-nav-title {
        margin-top: 0;
        font-size: 1.4rem;
    }

    .page-home .page-nav-sub {
        margin-top: 0;
        margin-left: auto;
    }

    .page-home[data-theme="dark"] .page-nav-item {
        border-bottom-color: rgba(235, 211, 162, 0.1);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40% { transform: translateY(-10px) translateX(-50%); }
    60% { transform: translateY(-5px) translateX(-50%); }
}

@media (min-width: 581px) {
    .page-home .page-nav {
        display: grid;
        grid-template-columns: repeat(5, 1fr);
    }
}

/* ─── 7-ELEVEN SHOP AESTHETIC ────────────────────────── */

.page-shop {
    --7e-accent: var(--accent-color);
    --7e-main: var(--master-red);
    --7e-bg-alt: var(--header-bg);
}

.page-shop .app-wrapper {
    background-color: var(--bg-color);
}

.page-shop .section-title {
    background: var(--7e-accent);
    color: #ffffff;
    border-bottom: 4px solid var(--7e-main);
    padding: 24px 48px;
    font-size: 2.2rem;
}

.page-shop .section-title rt {
    color: rgba(255, 255, 255, 0.7);
    opacity: 1;
}

.page-shop .section-title ruby {
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 400;
}

.page-shop .product-name ruby {
    font-family: 'Noto Sans TC', sans-serif;
    font-weight: 700;
    letter-spacing: 0.05em;
    font-size: 0.8em;
}

.page-shop .product-name rt {
    opacity: 0.8;
    color: var(--master-red);
    font-size: 0.55em;
}

[data-theme="dark"] .page-shop .section-title {
    background: #111;
    border-left: 8px solid var(--7e-accent);
    border-bottom-color: var(--7e-main);
}

.page-shop .shop-funnel {
    max-width: 1100px;
    padding-top: 48px;
}

.page-shop .funnel-progress {
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 48px;
}

.page-shop .progress-step.active {
    color: var(--7e-accent);
}

.page-shop .progress-step.active::after {
    background: var(--7e-accent);
    height: 4px;
    bottom: -14px;
}

.page-shop .step-heading {
    color: var(--7e-main);
    font-size: 2rem;
    border-left: 8px solid var(--7e-accent);
    padding-left: 20px;
    text-align: left;
    margin-bottom: 48px;
}

.page-shop .product-card {
    border: 1px solid var(--border-color);
    box-shadow: none;
    border-radius: 0;
    overflow: hidden;
    padding: 0;
    background: var(--card-bg);
}

.page-shop .product-card:hover {
    transform: translateY(-8px);
    border-color: var(--7e-accent);
    background: var(--stat-bg);
}

.page-shop .product-name {
    margin-top: 24px;
    padding: 0 24px;
    color: var(--text-color);
}

.page-shop .product-desc {
    padding: 0 24px 24px;
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.7;
}

.page-shop .select-btn {
    background: var(--7e-accent);
    border-radius: 0;
    font-size: 1.2rem;
    padding: 20px;
}

.page-shop .option-card {
    border-radius: 0;
    padding: 32px;
    border: 1px solid var(--border-color);
}

.page-shop .option-card.selected {
    background: var(--7e-accent);
    border-color: var(--7e-accent);
    color: #fff;
}

.page-shop .checkout-card {
    border-radius: 0;
    border: 2px solid var(--7e-accent);
    background: var(--card-bg);
}

.page-shop .checkout-btn {
    background: var(--7e-main);
    border-radius: 0;
    margin-top: 24px;
}

.page-shop .qty-controls button {
    border-radius: 0;
    border-color: var(--border-color);
    color: var(--text-color);
    background: var(--stat-bg);
}

.page-shop .summary-total {
    color: var(--7e-main);
}

/* 7-Eleven style top banner mockup - using brand colors */
.page-shop .shop-section::before {
    content: "OPEN! POINT ｜ 24H CONVENIENCE CRAFT ｜ SINCE #001";
    display: block;
    background: var(--7e-bg-alt);
    color: var(--text-color);
    text-align: center;
    padding: 12px;
    font-family: 'Dela Gothic One', sans-serif;
    letter-spacing: 4px;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
}