/* ===== Muchen Design System v2 ===== */

/* --- CSS Variables --- */
:root {
    --mc-primary: #1bbca3;
    --mc-primary-hover: #21dfc2;
    --mc-primary-dark: #158f7c;
    --mc-text: #334240;
    --mc-text-light: #6b7c79;
    --mc-bg: #fff;
    --mc-bg-alt: #f2f5f4;
    --mc-dark: #1a2726;
    --mc-dark-mid: #2d4240;
    --mc-shadow: 0 4px 24px rgba(0,0,0,0.06);
    --mc-shadow-hover: 0 8px 32px rgba(27,188,163,0.15);
    --mc-radius: 12px;
    --mc-font: "Open Sans", sans-serif;
    --mc-font-heading: "Roboto", sans-serif;
    --mc-font-brand: "Poppins", sans-serif;
    --mc-container: 1140px;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
    font-family: var(--mc-font); color: var(--mc-text); font-size: 14px; line-height: 1.6;
    background: var(--mc-bg);
    background-image:
        linear-gradient(rgba(27,188,163,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(27,188,163,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}
h1, h2, h3, h4, h5, h6 { font-family: var(--mc-font-heading); }
a { color: var(--mc-primary); text-decoration: none; transition: color .3s; }
a:hover { color: var(--mc-primary-hover); }

/* --- Navigation (Glassmorphism) --- */
.mc-nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    height: 70px; background: rgba(255,255,255,0.85);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.04);
    transition: box-shadow .3s, background .3s;
}
.mc-nav.scrolled {
    background: rgba(255,255,255,0.95);
    box-shadow: 0 1px 20px rgba(0,0,0,0.08);
}
.mc-nav-inner {
    max-width: var(--mc-container); margin: 0 auto; padding: 0 20px;
    display: flex; align-items: center; justify-content: space-between; height: 100%;
}
.mc-nav-logo {
    font-family: var(--mc-font-brand); font-size: 26px; font-weight: 600;
    color: var(--mc-text); text-decoration: none;
}
.mc-nav-logo span { color: var(--mc-primary); }
.mc-nav-menu { display: flex; gap: 4px; }
.mc-nav-menu a {
    padding: 8px 16px; font-family: var(--mc-font-heading);
    font-size: 13px; font-weight: 500; color: var(--mc-text-light); text-decoration: none;
    text-transform: uppercase; letter-spacing: 0.3px;
    border-radius: 8px; transition: all .3s;
}
.mc-nav-menu a:hover { color: var(--mc-primary); background: rgba(27,188,163,0.06); }
.mc-nav-menu a.active { color: var(--mc-primary); background: rgba(27,188,163,0.1); font-weight: 600; }
.mc-nav-toggle {
    display: none; background: none; border: none; cursor: pointer;
    color: var(--mc-text); font-size: 24px; width: auto; height: auto; box-shadow: none;
}
.mc-nav-spacer { height: 70px; }

/* --- Page Layout --- */
.mc-page-wrap { display: flex; flex-direction: column; min-height: calc(100vh - 70px); }
.mc-page-wrap > .mc-footer { margin-top: auto; }

/* --- Container --- */
.mc-container { max-width: var(--mc-container); margin: 0 auto; padding: 0 20px; }

/* --- Hero (Animated gradient) --- */
.mc-hero {
    position: relative; width: 100%; min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    text-align: center; overflow: hidden;
    background: linear-gradient(135deg, #1a2726 0%, #1e3533 25%, #1bbca3 50%, #2d4240 75%, #1a2726 100%);
    background-size: 400% 400%;
    animation: mc-gradient 12s ease infinite;
    margin-top: -70px; padding-top: 70px;
}
.mc-hero::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(27,188,163,0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(27,188,163,0.1) 0%, transparent 50%);
    pointer-events: none;
}
@keyframes mc-gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.mc-hero h1 {
    font-size: 52px; font-weight: 700; color: #fff; margin: 0 0 16px;
    letter-spacing: 2px; position: relative;
    text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}
.mc-hero p {
    font-size: 18px; color: rgba(255,255,255,0.8); margin: 0 0 36px;
    max-width: 600px; margin-left: auto; margin-right: auto;
    line-height: 1.8; position: relative;
}
.mc-hero .mc-btn {
    border-radius: 50px; border: 2px solid var(--mc-primary); background: var(--mc-primary);
    color: #fff; padding: 12px 36px; font-size: 14px; font-weight: 500;
    letter-spacing: 1px; text-transform: uppercase;
    box-shadow: 0 4px 20px rgba(27,188,163,0.3);
}
.mc-hero .mc-btn:hover {
    background: var(--mc-primary-hover); border-color: var(--mc-primary-hover);
    box-shadow: 0 6px 28px rgba(27,188,163,0.4); transform: translateY(-2px);
}
.mc-hero .mc-btn-outline {
    border-color: rgba(255,255,255,0.4); background: transparent;
    color: #fff; box-shadow: none;
}
.mc-hero .mc-btn-outline:hover {
    border-color: var(--mc-primary); background: var(--mc-primary); color: #fff;
    box-shadow: 0 4px 20px rgba(27,188,163,0.3);
}

/* --- Section --- */
.mc-section { padding: 80px 0; position: relative; }
.mc-section-alt { background: var(--mc-bg-alt); }
.mc-section-title {
    font-size: 30px; font-weight: 700; color: var(--mc-text); margin-bottom: 12px;
    text-align: center; letter-spacing: 0.5px;
}
.mc-section-subtitle {
    font-size: 16px; color: var(--mc-text-light); text-align: center; margin-bottom: 48px;
    line-height: 1.6;
}
.mc-section-title::after {
    content: ''; display: block; width: 50px; height: 3px;
    background: var(--mc-primary); margin: 14px auto 0;
    border-radius: 2px;
}

/* --- Card Grid --- */
.mc-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px;
}
.mc-grid-3 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.mc-grid-4 { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

/* --- Card (Clean elevated style) --- */
.mc-card {
    background: var(--mc-bg); border-radius: var(--mc-radius); padding: 28px;
    box-shadow: var(--mc-shadow);
    transition: transform .3s, box-shadow .3s;
    position: relative; overflow: hidden;
    border: 1px solid rgba(0,0,0,0.04);
}
.mc-card::before { display: none; }
.mc-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--mc-shadow-hover);
}
.mc-card-title {
    font-size: 17px; font-weight: 700; color: var(--mc-text); margin-bottom: 8px;
    position: relative; z-index: 1; transition: color .3s;
}
.mc-card-desc {
    font-size: 14px; color: var(--mc-text-light); line-height: 1.7;
    position: relative; z-index: 1;
}
.mc-card-icon {
    width: 56px; height: 56px; border-radius: 14px;
    background: rgba(27,188,163,0.1); color: var(--mc-primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 24px; margin-bottom: 16px;
    position: relative; z-index: 1; transition: all .3s;
}
.mc-card:hover .mc-card-icon {
    background: var(--mc-primary); color: #fff;
    transform: scale(1.05);
}
.mc-card:hover .mc-card-title { color: var(--mc-primary); }
.mc-card-img {
    width: 100%; height: 200px; object-fit: cover; border-radius: 8px; margin-bottom: 16px;
    background: var(--mc-bg-alt); position: relative; z-index: 1;
}
.mc-card-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; position: relative; z-index: 1; }
.mc-tag {
    background: rgba(27,188,163,0.08); color: var(--mc-primary); border-radius: 6px;
    padding: 4px 10px; font-size: 12px; font-weight: 500;
}

/* --- Portfolio Card (Overlay style) --- */
.mc-card-portfolio {
    background: var(--mc-bg); border-radius: var(--mc-radius); padding: 0;
    box-shadow: var(--mc-shadow); overflow: hidden; position: relative;
}
.mc-card-portfolio .mc-card-img {
    border-radius: 0; margin-bottom: 0; height: 220px;
    transition: transform .4s;
}
.mc-card-portfolio:hover .mc-card-img { transform: scale(1.05); }
.mc-card-portfolio .mc-card-overlay {
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(26,39,38,0.7);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    opacity: 0; transition: opacity .3s;
}
.mc-card-portfolio:hover .mc-card-overlay { opacity: 1; }
.mc-card-portfolio .mc-card-overlay .mc-card-title { color: #fff; font-size: 16px; }
.mc-card-portfolio .mc-card-overlay .mc-card-desc { color: rgba(255,255,255,0.8); font-size: 13px; }

/* --- Member Card (Name always visible, details on hover) --- */
.mc-member {
    text-align: center; padding: 0; overflow: hidden;
    background: var(--mc-dark); border-radius: var(--mc-radius);
    box-shadow: var(--mc-shadow); position: relative;
    border: none;
}
.mc-member:hover { transform: translateY(-4px); box-shadow: var(--mc-shadow-hover); }
.mc-member-img { width: 100%; height: 280px; object-fit: cover; display: block; }
.mc-member-avatar {
    width: 100%; height: 280px; object-fit: cover; border-radius: 0;
    margin: 0; display: block; background: var(--mc-dark-mid);
    box-shadow: none; border: none;
    font-size: 48px; color: var(--mc-primary);
    align-items: center; justify-content: center;
}
.mc-member-name-bar {
    padding: 14px 16px; background: var(--mc-dark);
    text-align: center;
}
.mc-member-name-bar .mc-member-name { font-size: 15px; font-weight: 600; color: #fff; }
.mc-member-name-bar .mc-member-role { font-size: 12px; color: var(--mc-primary); margin-top: 2px; }
.mc-member-info {
    position: absolute; bottom: 0; left: 0; right: 0;
    background: linear-gradient(0deg, rgba(0,0,0,0.92) 0%, rgba(0,0,0,0.8) 40%, transparent 100%);
    padding: 60px 20px 20px; color: #fff;
    transform: translateY(100%); transition: transform .4s ease;
}
.mc-member:hover .mc-member-info { transform: translateY(0); }
.mc-member-name { font-size: 16px; font-weight: 600; color: #fff; }
.mc-member-role { font-size: 13px; color: var(--mc-primary); margin-top: 2px; }
.mc-member-bio { font-size: 13px; color: rgba(255,255,255,0.7); margin-top: 8px; line-height: 1.5; }

/* --- Buttons (Pill style) --- */
.mc-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 28px;
    background: var(--mc-primary); color: #fff; border: 2px solid var(--mc-primary);
    border-radius: 50px; font-family: var(--mc-font-heading);
    font-size: 14px; font-weight: 500; text-decoration: none;
    cursor: pointer; letter-spacing: 0.5px;
    transition: all .3s ease-in-out; box-shadow: none;
}
.mc-btn:hover {
    background: var(--mc-primary-hover); border-color: var(--mc-primary-hover); color: #fff;
    transform: translateY(-1px); box-shadow: 0 4px 16px rgba(27,188,163,0.25);
}
.mc-btn:active { transform: scale(0.97); }
.mc-btn-outline {
    background: transparent; color: var(--mc-primary); border: 2px solid var(--mc-primary);
}
.mc-btn-outline:hover {
    background: var(--mc-primary); color: #fff; border-color: var(--mc-primary);
    transform: translateY(-1px); box-shadow: 0 4px 16px rgba(27,188,163,0.25);
}

/* --- Footer (Three-column, dark teal) --- */
.mc-footer {
    background: var(--mc-dark); color: #fff; font-size: 14px;
    position: relative;
}
.mc-footer-top {
    background: var(--mc-dark-mid); border-bottom: 1px solid rgba(255,255,255,0.06);
    padding: 60px 0 40px;
}
.mc-footer-inner {
    display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px;
}
.mc-footer-logo {
    font-family: var(--mc-font-brand); font-size: 22px; font-weight: 700;
    color: #fff; margin-bottom: 12px;
}
.mc-footer-logo span { color: var(--mc-primary); }
.mc-footer-desc { font-size: 14px; color: rgba(255,255,255,0.6); max-width: 320px; line-height: 1.7; }
.mc-footer-heading {
    font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 16px;
    text-transform: uppercase; letter-spacing: 0.5px;
}
.mc-footer-links {
    list-style: none; display: flex; flex-direction: column; gap: 10px;
}
.mc-footer-links a {
    color: rgba(255,255,255,0.6); font-size: 14px; transition: color .3s;
}
.mc-footer-links a:hover { color: var(--mc-primary); }
.mc-footer-contact {
    display: flex; flex-direction: column; gap: 10px;
    font-size: 14px; color: rgba(255,255,255,0.6);
}
.mc-footer-contact a { color: rgba(255,255,255,0.6); }
.mc-footer-contact a:hover { color: var(--mc-primary); }
.mc-footer-bottom {
    padding: 20px 0; text-align: center;
    font-size: 13px; color: rgba(255,255,255,0.4);
}
.mc-footer-bottom a { color: var(--mc-primary); }

/* --- AI Chat Widget --- */
.mc-chat-btn {
    position: fixed; bottom: 20px; right: 20px; z-index: 200;
    width: 52px; height: 52px; border-radius: 50%;
    background: var(--mc-primary); color: #fff; border: none;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(27,188,163,0.35);
    transition: all .3s;
}
.mc-chat-btn:hover {
    background: var(--mc-primary-hover);
    box-shadow: 0 6px 28px rgba(27,188,163,0.45);
    transform: scale(1.08);
}
.mc-chat-box {
    position: fixed; bottom: 84px; right: 20px; z-index: 200;
    width: 380px; max-width: calc(100vw - 32px); height: 500px; max-height: 70vh;
    background: var(--mc-bg); border-radius: 16px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.12);
    display: flex; flex-direction: column; overflow: hidden;
}
.mc-chat-header {
    background: var(--mc-primary); color: #fff; padding: 16px 18px;
    display: flex; justify-content: space-between; align-items: center;
    font-family: var(--mc-font-heading); font-size: 15px; font-weight: 500;
}
.mc-chat-messages {
    flex: 1; overflow-y: auto; padding: 16px;
    display: flex; flex-direction: column; gap: 10px;
    background: var(--mc-bg-alt);
}
.mc-chat-msg {
    max-width: 82%; padding: 10px 14px; border-radius: 12px;
    font-size: 13px; line-height: 1.6; word-break: break-word;
}
.mc-chat-msg.bot {
    background: #fff; color: var(--mc-text); align-self: flex-start;
    box-shadow: 0 1px 4px rgba(0,0,0,0.05);
    border-bottom-left-radius: 4px;
}
.mc-chat-msg.user {
    background: var(--mc-primary); color: #fff; align-self: flex-end;
    border-bottom-right-radius: 4px;
}
.mc-chat-msg.typing { color: #888; font-style: italic; background: transparent; box-shadow: none; }
.mc-chat-input {
    padding: 12px 14px; border-top: 1px solid #eee;
    display: flex; gap: 8px; background: #fff;
}
.mc-chat-input input {
    flex: 1; padding: 10px 16px;
    border: 1px solid #e0e0e0; border-radius: 50px;
    font-size: 13px; outline: none;
    transition: border-color .3s;
}
.mc-chat-input input:focus { border-color: var(--mc-primary); }
.mc-chat-input button {
    background: var(--mc-primary); color: #fff; border: none; border-radius: 50px;
    padding: 0 18px; font-size: 13px; cursor: pointer;
    transition: background .3s;
}
.mc-chat-input button:hover { background: var(--mc-primary-hover); }

/* --- Back to Top --- */
.mc-back-top {
    position: fixed; bottom: 80px; right: 20px; z-index: 199;
    width: 38px; height: 38px; border-radius: 50%;
    background: var(--mc-primary); color: #fff; border: none;
    display: none; align-items: center; justify-content: center;
    cursor: pointer; font-size: 18px;
    box-shadow: 0 2px 12px rgba(27,188,163,0.3);
    transition: all .3s;
}
.mc-back-top.show { display: flex; }
.mc-back-top:hover { background: var(--mc-primary-hover); transform: translateY(-2px); }

/* --- Fade Animation --- */
.mc-fade {
    opacity: 0; transform: translateY(20px);
    transition: opacity .6s ease, transform .6s ease;
}
.mc-fade.visible { opacity: 1; transform: translateY(0); }

/* --- Filter Buttons (Portfolio) --- */
.mc-filter-bar {
    display: inline-flex; gap: 0; flex-wrap: wrap; justify-content: center;
    margin-bottom: 30px; background: var(--mc-bg);
    border-radius: 50px; padding: 4px; box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.mc-filter-wrap { text-align: center; margin-bottom: 30px; }
.mc-filter-bar button {
    padding: 8px 20px; border: none; background: transparent;
    font-family: var(--mc-font-heading); font-size: 13px; font-weight: 500;
    color: var(--mc-text-light); cursor: pointer; border-radius: 50px;
    transition: all .3s; text-transform: uppercase; letter-spacing: 0.3px;
}
.mc-filter-bar button.active,
.mc-filter-bar button:hover {
    background: var(--mc-primary); color: #fff;
}

/* --- Stats Counter --- */
.mc-stats-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px;
    max-width: 900px; margin: 0 auto; text-align: center;
}
.mc-stat-item {
    padding: 20px;
}
.mc-stat-num {
    font-family: var(--mc-font-heading); font-size: 48px; font-weight: 700;
    color: var(--mc-primary); line-height: 1.2;
}
.mc-stat-label {
    font-size: 14px; color: var(--mc-text-light); margin-top: 8px;
    font-weight: 500; letter-spacing: 0.3px;
}

/* --- CTA Section --- */
.mc-cta {
    padding: 80px 0; text-align: center;
    background: linear-gradient(135deg, var(--mc-dark) 0%, var(--mc-dark-mid) 50%, var(--mc-primary-dark) 100%);
    position: relative; overflow: hidden;
}
.mc-cta::before {
    content: ''; position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(27,188,163,0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(27,188,163,0.06) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}
.mc-cta h2 {
    font-size: 32px; font-weight: 700; color: #fff; margin-bottom: 16px;
    position: relative;
}
.mc-cta p {
    font-size: 16px; color: rgba(255,255,255,0.7); margin-bottom: 32px;
    max-width: 600px; margin-left: auto; margin-right: auto;
    line-height: 1.7; position: relative;
}
.mc-cta .mc-btn {
    position: relative;
    box-shadow: 0 4px 20px rgba(27,188,163,0.3);
}
.mc-cta .mc-btn-outline {
    border-color: rgba(255,255,255,0.4); background: transparent;
    color: #fff; box-shadow: none;
}
.mc-cta .mc-btn-outline:hover {
    border-color: var(--mc-primary); background: var(--mc-primary);
    box-shadow: 0 4px 20px rgba(27,188,163,0.3);
}

/* --- Subscribe Section --- */
.mc-subscribe-section {
    background: linear-gradient(135deg, var(--mc-dark) 0%, var(--mc-primary-dark) 100%);
    color: #fff; text-align: center; padding: 60px 0 !important;
}
.mc-subscribe-section .mc-section-title {
    color: #fff; font-size: 26px; margin-bottom: 10px;
}
.mc-subscribe-section .mc-section-title::after {
    background: rgba(255,255,255,0.3);
}
.mc-subscribe-section .mc-section-subtitle {
    color: rgba(255,255,255,0.7); margin-bottom: 28px; font-size: 15px;
}
.mc-subscribe-section input[type="email"] {
    transition: border-color .2s, background .2s;
}
.mc-subscribe-section input[type="email"]:focus {
    border-color: var(--mc-primary); background: rgba(255,255,255,0.15);
}
.mc-subscribe-section input[type="email"]::placeholder { color: rgba(255,255,255,0.5); }
@media (max-width: 480px) {
    .mc-subscribe-section form { flex-direction: column; }
    .mc-subscribe-section .mc-btn { width: 100%; }
}

/* --- Friend Links (Footer) --- */
.mc-friendlinks-bar {
    padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.06);
    background: var(--mc-dark);
}
.mc-friendlinks-title {
    font-size: 12px; color: rgba(255,255,255,0.3); margin-bottom: 10px;
    text-transform: uppercase; letter-spacing: 1px; font-weight: 600;
}
.mc-friendlinks {
    display: flex; gap: 16px; flex-wrap: wrap; align-items: center;
}
.mc-friendlinks a {
    font-size: 13px; color: rgba(255,255,255,0.45);
    transition: color .3s; text-decoration: none;
}
.mc-friendlinks a:hover { color: var(--mc-primary); }

/* --- Mobile --- */
@media (max-width: 768px) {
    .mc-nav-toggle { display: block; }
    .mc-nav-menu {
        display: none; position: fixed; top: 0; left: 0; bottom: 0;
        width: 280px; background: rgba(26,39,38,0.97);
        backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
        flex-direction: column; padding: 80px 24px 24px;
        z-index: 200; transform: translateX(-100%);
        transition: transform .4s ease;
    }
    .mc-nav-menu.open { display: flex; transform: translateX(0); }
    .mc-nav-menu a {
        color: rgba(255,255,255,0.7); padding: 12px 0; font-size: 14px;
        background: none; border-radius: 0;
    }
    .mc-nav-menu a:hover, .mc-nav-menu a.active { color: var(--mc-primary); background: none; }
    .mc-hero { min-height: 80vh; }
    .mc-hero h1 { font-size: 28px; }
    .mc-hero p { font-size: 15px; }
    .mc-section { padding: 50px 0; }
    .mc-section-title { font-size: 24px; }
    .mc-grid { grid-template-columns: 1fr; }
    .mc-footer-inner { grid-template-columns: 1fr; gap: 30px; }
    .mc-chat-box { width: calc(100vw - 32px); right: 16px; bottom: 80px; }
    .mc-member-info { transform: translateY(0); }
    .mc-member-name-bar { display: none; }
    .mc-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .mc-stat-num { font-size: 36px; }
    .mc-cta h2 { font-size: 24px; }
    .mc-cta p { font-size: 14px; }
    .mc-friendlinks { flex-wrap: wrap; }
}