/* ========================================================
   NHA KHOA 5S – Main Stylesheet
   ======================================================== */

/* ── Reset & Base ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Be Vietnam Pro', sans-serif;
    color: #333;
    line-height: 1.6;
    overflow-x: hidden;
    background: #fff;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
.nk-container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ── Typography ──────────────────────────────────────────── */
.nk-section-title {
    text-align: center;
    font-size: clamp(1.4rem, 2.5vw, 1.85rem);
    font-weight: 900;
    color: #222;
    text-transform: uppercase;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}
.nk-section-title span { color: #0060A1; }
.nk-section-sub {
    text-align: center;
    color: #777;
    font-size: 0.95rem;
    margin-bottom: 40px;
}

/* ── Buttons ─────────────────────────────────────────────── */
.nk-btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 26px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.25s;
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.nk-btn-primary { background: #0060A1; color: #fff; }
.nk-btn-primary:hover { background: #004d85; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,96,161,0.35); }
.nk-btn-gold { background: #FFD700; color: #002d60; }
.nk-btn-gold:hover { background: #ffc400; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,215,0,0.4); }
.nk-btn-outline { background: transparent; color: #0060A1; border: 2px solid #0060A1; }
.nk-btn-outline:hover { background: #0060A1; color: #fff; }
.nk-btn-ghost { background: transparent; color: #fff; border: 2px solid rgba(255,255,255,0.6); }
.nk-btn-ghost:hover { background: rgba(255,255,255,0.15); border-color: #fff; }

/* ── Top Bar ─────────────────────────────────────────────── */
.nk-topbar {
    background: #f0f7ff;
    padding: 7px 0;
    font-size: 0.81rem;
    color: #555;
    border-bottom: 1px solid #dce9f7;
}
.nk-topbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}
.nk-topbar-info { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.nk-topbar-info span { display: flex; align-items: center; gap: 5px; }
.nk-topbar-info i { color: #0060A1; }
.nk-topbar-flags { display: flex; gap: 6px; font-size: 1.2rem; }

/* ── Header ──────────────────────────────────────────────── */
.nk-header {
    background: #fff;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow 0.3s;
}
.nk-header.scrolled { box-shadow: 0 3px 25px rgba(0,0,0,0.15); }
.nk-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 11px 0;
    gap: 16px;
}

/* Logo */
.nk-logo { display: flex; align-items: center; gap: 10px; }
.nk-logo-icon {
    width: 42px; height: 42px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; flex-shrink: 0;
}
.nk-logo-name {
    font-size: 1.25rem;
    font-weight: 900;
    color: #0060A1;
    line-height: 1.1;
    letter-spacing: 0.5px;
}
.nk-logo-tagline { font-size: 0.62rem; color: #999; font-weight: 400; }

/* Nav */
.nk-nav ul { display: flex; gap: 2px; align-items: center; }
.nk-nav ul li a {
    padding: 8px 11px;
    font-size: 0.86rem;
    font-weight: 600;
    color: #333;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
    display: flex; align-items: center; gap: 4px;
}
.nk-nav ul li a:hover, .nk-nav ul li a.active { color: #0060A1; background: #eef5fd; }
.nk-nav ul li.has-sub { position: relative; }
.nk-sub {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background: #fff;
    min-width: 210px;
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    padding: 8px 0;
    z-index: 200;
    border-top: 3px solid #0060A1;
    transform: translateY(6px);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
}
.nk-nav ul li.has-sub:hover .nk-sub {
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}
.nk-sub li a {
    padding: 9px 18px !important;
    display: block !important;
    font-size: 0.84rem !important;
    color: #444 !important;
    background: none !important;
    border-radius: 0 !important;
    transition: background 0.2s, padding-left 0.2s !important;
}
.nk-sub li a:hover { background: #f0f7ff !important; padding-left: 24px !important; color: #0060A1 !important; }

/* Header CTAs */
.nk-header-ctas { display: flex; gap: 8px; align-items: center; }
.nk-btn-branch {
    background: transparent; color: #0060A1; border: 2px solid #0060A1;
    padding: 8px 14px; border-radius: 6px; font-size: 0.8rem; font-weight: 700;
    cursor: pointer; transition: all 0.25s; text-transform: uppercase;
}
.nk-btn-branch:hover { background: #0060A1; color: #fff; }
.nk-btn-book {
    background: #0060A1; color: #fff;
    padding: 10px 18px; border-radius: 6px; font-size: 0.84rem; font-weight: 800;
    cursor: pointer; transition: background 0.25s; text-transform: uppercase;
}
.nk-btn-book:hover { background: #004d85; }

.nk-hamburger {
    display: none; background: none; border: none;
    font-size: 1.5rem; color: #0060A1; cursor: pointer;
}

/* ── Hero / Slider ───────────────────────────────────────── */
.nk-hero {
    position: relative;
    overflow: hidden;
    min-height: 520px;
}
.nk-slides { position: relative; }
.nk-slide {
    display: none;
    min-height: 520px;
    align-items: center;
}
.nk-slide.is-active { display: flex; }
.nk-slide-1 { background: linear-gradient(135deg, #0077cc 0%, #003d80 55%, #001a40 100%); }
.nk-slide-2 { background: linear-gradient(135deg, #005fa1 0%, #002d60 55%, #001830 100%); }
.nk-slide-3 { background: linear-gradient(135deg, #0068b0 0%, #00356e 55%, #001c38 100%); }

.nk-slide-content { padding: 60px 0; flex: 1; position: relative; z-index: 2; }
.nk-slide-badge {
    display: inline-flex; align-items: center; gap: 7px;
    background: rgba(255,255,255,0.15); backdrop-filter: blur(6px);
    border: 1px solid rgba(255,255,255,0.25);
    color: #fff; padding: 5px 15px; border-radius: 20px;
    font-size: 0.8rem; font-weight: 600; margin-bottom: 20px;
}
.nk-slide-title {
    font-size: clamp(2rem, 4.5vw, 3.6rem);
    font-weight: 900; color: #fff; line-height: 1.1;
    margin-bottom: 14px; text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.nk-slide-title .gold { color: #FFD700; display: block; }
.nk-slide-sub {
    font-size: 1rem; color: rgba(255,255,255,0.85);
    margin-bottom: 28px; max-width: 480px; line-height: 1.7;
}
.nk-slide-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.nk-slide-stats {
    display: flex; gap: 24px; margin-top: 30px;
}
.nk-stat-num { font-size: 1.4rem; font-weight: 900; color: #FFD700; line-height: 1; }
.nk-stat-lbl { font-size: 0.72rem; color: rgba(255,255,255,0.75); text-transform: uppercase; margin-top: 2px; }

.nk-slide-visual {
    flex: 0 0 42%; max-width: 42%;
    display: flex; align-items: flex-end; justify-content: center;
    padding-right: 10px;
}
.nk-visual-box {
    width: 210px; height: 290px;
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: 28px;
    display: flex; align-items: center; justify-content: center;
    animation: nkFloat 3s ease-in-out infinite;
    font-size: 5rem; color: rgba(255,255,255,0.25);
}
@keyframes nkFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Dots */
.nk-dots {
    position: absolute; bottom: 18px; left: 50%;
    transform: translateX(-50%);
    display: flex; gap: 8px; z-index: 10;
}
.nk-dot {
    width: 10px; height: 10px; border-radius: 50%;
    background: rgba(255,255,255,0.35);
    border: none; cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}
.nk-dot.is-active { background: #FFD700; transform: scale(1.35); }

/* ── Trust Bar ───────────────────────────────────────────── */
.nk-trust {
    background: #fff;
    padding: 22px 0;
    border-bottom: 2px solid #e6f0fb;
}
.nk-trust-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
}
.nk-trust-item {
    display: flex; align-items: center; gap: 14px;
    justify-content: center; padding: 14px 10px;
    border-right: 1px solid #dce9f7;
}
.nk-trust-item:last-child { border-right: none; }
.nk-trust-icon {
    width: 50px; height: 50px;
    background: linear-gradient(135deg, #0060A1, #0099d4);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; font-size: 1.25rem; color: #fff;
}
.nk-trust-num { font-size: 1.3rem; font-weight: 900; color: #0060A1; line-height: 1; }
.nk-trust-desc { font-size: 0.75rem; color: #777; font-weight: 500; text-transform: uppercase; letter-spacing: 0.3px; margin-top: 2px; }

/* ── Services ────────────────────────────────────────────── */
.nk-services { padding: 64px 0; background: #f5faff; }
.nk-services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 36px;
}
.nk-service-card {
    background: #fff;
    border-radius: 14px;
    padding: 24px 20px;
    box-shadow: 0 4px 20px rgba(0,96,161,0.06);
    border: 1.5px solid #e5f0fb;
    display: flex; align-items: flex-start; gap: 15px;
    transition: transform 0.3s, box-shadow 0.3s;
}
.nk-service-card:hover { transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0,96,161,0.15); }
.nk-service-icon {
    width: 54px; height: 54px;
    background: linear-gradient(135deg, #0060A1, #0099d4);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; font-size: 1.4rem; color: #fff;
}
.nk-service-card h3 { font-size: 1rem; font-weight: 800; color: #0060A1; margin-bottom: 6px; }
.nk-service-card p { font-size: 0.82rem; color: #666; line-height: 1.55; }
.nk-services-cta { text-align: center; }

/* ── Why Choose ──────────────────────────────────────────── */
.nk-why {
    padding: 64px 0;
    background: linear-gradient(135deg, #0060A1 0%, #003d6b 100%);
    position: relative; overflow: hidden;
}
.nk-why::before {
    content: ''; position: absolute;
    width: 500px; height: 500px; border-radius: 50%;
    background: rgba(255,255,255,0.04);
    top: -180px; right: -150px; pointer-events: none;
}
.nk-why .nk-section-title { color: #fff; }
.nk-why .nk-section-title span { color: #FFD700; }
.nk-why .nk-section-sub { color: rgba(255,255,255,0.7); }
.nk-why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px; margin-top: 36px;
}
.nk-why-card {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 16px; padding: 28px 22px; text-align: center;
    transition: background 0.3s, transform 0.3s;
}
.nk-why-card:hover { background: rgba(255,255,255,0.18); transform: translateY(-4px); }
.nk-why-icon {
    width: 64px; height: 64px;
    background: rgba(255,215,0,0.12);
    border: 2px solid rgba(255,215,0,0.35);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 14px;
    font-size: 1.6rem; color: #FFD700;
}
.nk-why-card h3 { font-size: 0.95rem; font-weight: 800; color: #fff; margin-bottom: 8px; text-transform: uppercase; }
.nk-why-card p { font-size: 0.82rem; color: rgba(255,255,255,0.72); line-height: 1.55; }

/* ── Process ─────────────────────────────────────────────── */
.nk-process { padding: 64px 0; background: #fff; }
.nk-process-layout {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 52px; align-items: center; margin-top: 40px;
}
.nk-process-visual {
    background: linear-gradient(135deg, #0060A1, #003d6b);
    border-radius: 20px; height: 400px;
    display: flex; align-items: center; justify-content: center;
    text-align: center; position: relative; overflow: hidden;
    box-shadow: 0 15px 50px rgba(0,96,161,0.25);
}
.nk-process-visual::before {
    content: ''; position: absolute;
    width: 320px; height: 320px; border-radius: 50%;
    background: rgba(255,255,255,0.05);
    top: -100px; right: -100px; pointer-events: none;
}
.nk-process-visual-inner { position: relative; z-index: 1; }
.nk-process-visual-inner .emoji { font-size: 3.5rem; margin-bottom: 12px; }
.nk-process-visual-inner h3 { font-size: 1.6rem; font-weight: 900; color: #fff; text-transform: uppercase; margin-bottom: 4px; }
.nk-process-visual-inner p { color: rgba(255,255,255,0.75); font-size: 0.88rem; }
.nk-process-visual-cta {
    display: inline-block; margin-top: 18px;
    background: #FFD700; color: #002d60;
    padding: 10px 22px; border-radius: 8px;
    font-weight: 800; font-size: 0.82rem; text-transform: uppercase;
    transition: background 0.25s;
}
.nk-process-visual-cta:hover { background: #ffc400; }
.nk-steps { display: flex; flex-direction: column; gap: 18px; }
.nk-step {
    display: flex; align-items: flex-start; gap: 16px;
    background: #f5faff; border-radius: 12px; padding: 20px 22px;
    border-left: 4px solid #0060A1;
    transition: box-shadow 0.3s, transform 0.3s;
}
.nk-step:hover { box-shadow: 0 6px 22px rgba(0,96,161,0.12); transform: translateX(4px); }
.nk-step-num {
    width: 50px; height: 50px;
    background: #0060A1; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0; font-size: 1.15rem; color: #fff;
}
.nk-step-label { font-size: 0.7rem; font-weight: 800; color: #0060A1; text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 2px; opacity: 0.7; }
.nk-step h3 { font-size: 0.98rem; font-weight: 800; color: #0060A1; margin-bottom: 4px; }
.nk-step p { font-size: 0.82rem; color: #666; line-height: 1.55; }

/* ── Doctors ─────────────────────────────────────────────── */
.nk-doctors { padding: 64px 0; background: #f5faff; }

/* Doctor Slider */
.nk-doctors-slider-wrapper {
    position: relative;
    margin-top: 38px;
    overflow: hidden;
}
.nk-doctors-slider {
    display: flex;
    transition: transform 0.5s ease-in-out;
    gap: 22px;
}
.nk-doctor-card {
    flex: 0 0 calc(33.333% - 15px);
    background: #fff; border-radius: 16px; overflow: hidden;
    box-shadow: 0 4px 18px rgba(0,96,161,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    text-decoration: none;
    display: block;
}
.nk-doctor-card:hover { transform: translateY(-6px); box-shadow: 0 12px 34px rgba(0,96,161,0.18); }
.nk-doctor-img {
    height: 320px;
    background: linear-gradient(180deg, #e8f4fc 0%, #c5e3f6 60%, #0060A1 100%);
    display: flex; align-items: flex-end; justify-content: center;
    position: relative; overflow: hidden;
    border-right: 6px solid #0060A1;
}
.nk-doctor-img img {
    height: 95%;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    object-position: bottom center;
}
.nk-doctor-badge {
    position: absolute; top: 12px; right: 12px;
    background: #FFD700; color: #002d60;
    font-size: 0.68rem; font-weight: 800;
    padding: 3px 10px; border-radius: 20px; text-transform: uppercase;
    z-index: 2;
}
.nk-doctor-body { padding: 18px 20px; }
.nk-doctor-title { font-size: 0.75rem; color: #aaa; margin-bottom: 4px; }
.nk-doctor-name { font-size: 1.1rem; font-weight: 900; color: #0060A1; margin-bottom: 10px; }
.nk-doctor-spec { font-size: 0.8rem; color: #555; display: flex; align-items: flex-start; gap: 6px; margin-bottom: 5px; }
.nk-doctor-spec i { color: #0060A1; margin-top: 2px; flex-shrink: 0; }
.nk-doctors-cta { text-align: center; margin-top: 34px; }

/* Slider Navigation Buttons */
.nk-slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #fff;
    border: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: #0060A1;
    transition: all 0.3s;
}
.nk-slider-btn:hover {
    background: #0060A1;
    color: #fff;
    transform: translateY(-50%) scale(1.1);
}
.nk-slider-prev { left: -22px; }
.nk-slider-next { right: -22px; }

/* Slider Dots */
.nk-slider-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 24px;
}
.nk-slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ccc;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
}
.nk-slider-dot:hover { background: #0060A1; }
.nk-slider-dot.is-active {
    background: #0060A1;
    transform: scale(1.2);
}

/* ── Appointment Form ────────────────────────────────────── */
.nk-appointment {
    padding: 64px 0;
    background: linear-gradient(135deg, #edf4ff 0%, #d9ecfb 100%);
}
.nk-appointment-layout {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 52px; align-items: center;
}
.nk-appt-info h2 {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 900; color: #0060A1; text-transform: uppercase;
    margin-bottom: 12px; line-height: 1.2;
}
.nk-appt-info > p { color: #666; margin-bottom: 24px; line-height: 1.7; font-size: 0.95rem; }
.nk-contacts { display: flex; flex-direction: column; gap: 12px; }
.nk-contact-item {
    display: flex; align-items: center; gap: 14px;
    background: #fff; padding: 14px 16px; border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,96,161,0.07);
}
.nk-contact-icon {
    width: 42px; height: 42px;
    background: #0060A1; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 0.95rem; flex-shrink: 0;
}
.nk-contact-item strong { display: block; font-size: 0.75rem; color: #aaa; font-weight: 500; }
.nk-contact-item span { font-size: 0.92rem; font-weight: 700; color: #222; }

.nk-appt-form {
    background: #fff; border-radius: 20px; padding: 36px 32px;
    box-shadow: 0 15px 50px rgba(0,96,161,0.12);
}
.nk-appt-form h3 {
    font-size: 1.15rem; font-weight: 800; color: #0060A1;
    text-transform: uppercase; text-align: center; margin-bottom: 22px;
}
.nk-form-group { margin-bottom: 15px; }
.nk-form-group label { display: block; font-size: 0.8rem; font-weight: 600; color: #666; margin-bottom: 5px; }
.nk-form-group input,
.nk-form-group select,
.nk-form-group textarea {
    width: 100%; padding: 11px 13px;
    border: 1.5px solid #dbe8f5; border-radius: 8px;
    font-size: 0.88rem; font-family: inherit; color: #333;
    background: #fafcff; transition: border-color 0.25s, box-shadow 0.25s;
    outline: none;
}
.nk-form-group input:focus,
.nk-form-group select:focus,
.nk-form-group textarea:focus {
    border-color: #0060A1;
    box-shadow: 0 0 0 3px rgba(0,96,161,0.1);
    background: #fff;
}
.nk-form-group textarea { resize: vertical; min-height: 78px; }
.nk-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.nk-form-submit { width: 100%; padding: 14px; font-size: 0.95rem; margin-top: 6px; justify-content: center; }
.nk-form-note { font-size: 0.75rem; color: #999; text-align: center; margin-top: 10px; }
.nk-form-note i { color: #0060A1; }

/* ── Promotions ──────────────────────────────────────────── */
/* ── PRICING TABLE ── */
.nk-pricing { padding: 64px 0; background: #f4f8fc; }
.nk-pricing .nk-section-sub { color: #555; }
.nk-pricing-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 24px; margin-top: 40px; align-items: start;
}
.nk-pricing-card {
    background: #fff; border-radius: 18px; overflow: hidden;
    box-shadow: 0 4px 18px rgba(0,0,0,0.07);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative; display: flex; flex-direction: column;
}
.nk-pricing-card:hover { transform: translateY(-6px); box-shadow: 0 12px 32px rgba(0,0,0,0.12); }
.nk-pricing-card.is-popular {
    transform: translateY(-8px);
    box-shadow: 0 14px 40px rgba(0,96,161,0.22);
    border: 2px solid #0060A1;
}
.nk-pricing-card.is-popular:hover { transform: translateY(-14px); }
.nk-pricing-card.color-steel .nk-pricing-head { background: linear-gradient(135deg, #455A64, #263238); }
.nk-pricing-card.color-blue  .nk-pricing-head { background: linear-gradient(135deg, #0060A1, #003d6b); }
.nk-pricing-card.color-purple .nk-pricing-head { background: linear-gradient(135deg, #7B1FA2, #4a0066); }
.nk-pricing-badge {
    position: absolute; top: 16px; right: -1px;
    background: #FFD700; color: #003d6b;
    font-size: 0.65rem; font-weight: 900; letter-spacing: 0.5px;
    padding: 4px 14px 4px 12px; border-radius: 20px 0 0 20px;
    text-transform: uppercase; box-shadow: 0 2px 6px rgba(0,0,0,0.15); z-index: 2;
}
.nk-pricing-head { padding: 28px 24px 24px; color: #fff; text-align: center; position: relative; }
.nk-pricing-icon {
    width: 52px; height: 52px; border-radius: 50%;
    background: rgba(255,255,255,0.15); display: flex;
    align-items: center; justify-content: center;
    margin: 0 auto 14px; font-size: 1.3rem;
}
.nk-pricing-head h3 { font-size: 1.05rem; font-weight: 800; text-transform: uppercase; margin-bottom: 4px; letter-spacing: 0.3px; }
.nk-pricing-tagline { font-size: 0.8rem; opacity: 0.82; margin-bottom: 18px; }
.nk-pricing-price { margin-bottom: 6px; }
.nk-pricing-amount { font-size: 1.7rem; font-weight: 900; letter-spacing: -0.5px; }
.nk-pricing-unit   { font-size: 0.78rem; opacity: 0.8; display: block; margin-top: 2px; }
.nk-pricing-perday {
    display: inline-block; background: rgba(255,255,255,0.18);
    font-size: 0.78rem; font-weight: 700;
    padding: 4px 14px; border-radius: 20px; margin-top: 8px;
}
.nk-pricing-body { padding: 22px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.nk-pricing-features { list-style: none; margin: 0 0 22px; padding: 0; flex: 1; }
.nk-pricing-features li {
    display: flex; align-items: flex-start; gap: 10px;
    font-size: 0.83rem; color: #444; padding: 7px 0;
    border-bottom: 1px solid #f0f0f0; line-height: 1.45;
}
.nk-pricing-features li:last-child { border-bottom: none; }
.nk-pricing-features li .fas { margin-top: 2px; flex-shrink: 0; font-size: 0.78rem; }
.nk-pricing-features li .fa-check { color: #28a745; }
.nk-pricing-features li .fa-times { color: #bbb; }
.nk-pricing-features li.is-excluded { color: #aaa; }
.nk-pricing-cta {
    display: block; text-align: center;
    background: linear-gradient(135deg, #0060A1, #003d6b);
    color: #fff; font-size: 0.85rem; font-weight: 800;
    text-transform: uppercase; letter-spacing: 0.4px;
    padding: 13px 20px; border-radius: 10px;
    transition: opacity 0.25s, transform 0.2s;
}
.nk-pricing-cta:hover { opacity: 0.88; transform: scale(1.02); color: #fff; }
.color-purple .nk-pricing-cta { background: linear-gradient(135deg, #7B1FA2, #4a0066); }
.nk-pricing-note {
    text-align: center; margin-top: 28px;
    font-size: 0.82rem; color: #777;
    background: #fff; border-radius: 10px;
    padding: 14px 20px; border: 1px solid #e0e8f0;
    display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap;
}
.nk-pricing-note .fa-info-circle { color: #0060A1; }
.nk-pricing-note a { color: #0060A1; font-weight: 700; text-decoration: none; }
.nk-pricing-note a:hover { text-decoration: underline; }

/* ── News ────────────────────────────────────────────────── */
.nk-news { padding: 64px 0; background: #f5faff; }
.nk-news-layout {
    display: grid; grid-template-columns: 2fr 1fr;
    gap: 24px; margin-top: 36px;
}
.nk-news-main {
    background: #fff; border-radius: 14px; overflow: hidden;
    box-shadow: 0 4px 18px rgba(0,96,161,0.08);
    transition: transform 0.3s;
}
.nk-news-main:hover { transform: translateY(-4px); }
.nk-news-main-img {
    height: 220px; background: linear-gradient(135deg, #0060A1, #0099d4);
    display: flex; align-items: center; justify-content: center;
    font-size: 3.5rem; color: rgba(255,255,255,0.25);
}
.nk-news-main-body { padding: 22px; }
.nk-news-tag {
    font-size: 0.7rem; font-weight: 700; color: #0060A1;
    background: #e6f2fb; padding: 3px 10px; border-radius: 4px;
    display: inline-block; margin-bottom: 10px; text-transform: uppercase;
}
.nk-news-main-body h3 { font-size: 1.05rem; font-weight: 800; color: #1a1a1a; line-height: 1.4; margin-bottom: 10px; }
.nk-news-main-body p { font-size: 0.84rem; color: #777; line-height: 1.65; margin-bottom: 14px; }
.nk-news-meta { font-size: 0.76rem; color: #bbb; display: flex; align-items: center; gap: 5px; }

.nk-news-list { display: flex; flex-direction: column; gap: 14px; }
.nk-news-item {
    background: #fff; border-radius: 10px; overflow: hidden;
    display: flex; gap: 13px; padding: 13px;
    box-shadow: 0 2px 10px rgba(0,96,161,0.06);
    transition: transform 0.25s;
}
.nk-news-item:hover { transform: translateX(4px); }
.nk-news-thumb {
    width: 74px; height: 74px;
    background: linear-gradient(135deg, #0060A1, #003d6b);
    border-radius: 8px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; color: rgba(255,255,255,0.3);
}
.nk-news-item h4 { font-size: 0.84rem; font-weight: 700; color: #222; line-height: 1.4; margin-bottom: 4px; }
.nk-news-item .nk-news-date { font-size: 0.73rem; color: #bbb; display: flex; align-items: center; gap: 4px; }
.nk-news-more { text-align: center; margin-top: 28px; }

/* ── Certifications ──────────────────────────────────────── */
.nk-certs { padding: 50px 0; background: #fff; }
.nk-certs-badges {
    display: flex; flex-wrap: wrap;
    justify-content: center; gap: 16px; margin-top: 30px;
}
.nk-cert-badge {
    display: flex; align-items: center; gap: 10px;
    background: #f0f7ff; border: 1.5px solid #cce0f5;
    border-radius: 10px; padding: 13px 18px;
}
.nk-cert-icon { font-size: 1.5rem; color: #0060A1; }
.nk-cert-strong { display: block; font-size: 0.84rem; font-weight: 800; color: #0060A1; }
.nk-cert-sub { font-size: 0.73rem; color: #888; }

/* ── Floating Sidebar ────────────────────────────────────── */
.nk-floating {
    position: fixed; right: 14px; top: 50%;
    transform: translateY(-50%);
    display: flex; flex-direction: column; gap: 10px;
    z-index: 999;
}
.nk-float-btn {
    width: 50px; height: 50px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: transform 0.3s, box-shadow 0.3s;
    position: relative; text-decoration: none;
}
.nk-float-btn:hover { transform: scale(1.12); }
.nk-float-btn.phone { background: #0060A1; box-shadow: 0 4px 14px rgba(0,96,161,0.45); animation: nkPulse 2s infinite; }
.nk-float-btn.zalo  { background: #0068FF; box-shadow: 0 4px 14px rgba(0,104,255,0.4); }
.nk-float-btn.map1  { background: #E91E63; box-shadow: 0 4px 14px rgba(233,30,99,0.4); }
.nk-float-btn.map2  { background: #FF5722; box-shadow: 0 4px 14px rgba(255,87,34,0.4); }
.nk-float-btn i { color: #fff; font-size: 1.15rem; }
.nk-float-tip {
    position: absolute; right: 58px;
    background: rgba(0,0,0,0.72); color: #fff;
    font-size: 0.7rem; padding: 4px 10px; border-radius: 5px;
    white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity 0.2s;
    font-family: 'Be Vietnam Pro', sans-serif;
}
.nk-float-btn:hover .nk-float-tip { opacity: 1; }
@keyframes nkPulse {
    0%, 100% { box-shadow: 0 4px 14px rgba(0,96,161,0.45); }
    50% { box-shadow: 0 4px 24px rgba(0,96,161,0.7), 0 0 0 6px rgba(0,96,161,0.12); }
}

/* ── Mobile Nav ──────────────────────────────────────────── */
.nk-mobile-overlay {
    display: none; position: fixed;
    inset: 0; background: rgba(0,0,0,0.5); z-index: 2000;
}
.nk-mobile-overlay.is-open { display: block; }
.nk-mobile-panel {
    position: absolute; top: 0; right: 0;
    width: 280px; height: 100%; background: #fff;
    overflow-y: auto; padding: 20px;
}
.nk-mobile-close { text-align: right; margin-bottom: 16px; }
.nk-mobile-close button { background: none; border: none; font-size: 1.5rem; cursor: pointer; color: #444; }
.nk-mobile-panel nav ul { display: flex; flex-direction: column; }
.nk-mobile-panel nav ul li a {
    display: block; padding: 12px 8px;
    font-size: 0.93rem; font-weight: 600; color: #333;
    border-bottom: 1px solid #f0f0f0; transition: color 0.2s;
}
.nk-mobile-panel nav ul li a:hover { color: #0060A1; }
.nk-mobile-panel .nk-mobile-ctas { margin-top: 18px; display: flex; flex-direction: column; gap: 10px; }
.nk-mobile-panel .nk-mobile-ctas a { text-align: center; justify-content: center; }

/* ── Footer ──────────────────────────────────────────────── */
.nk-footer { background: #001e3c; color: rgba(255,255,255,0.72); padding: 50px 0 0; }
.nk-footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 28px; margin-bottom: 36px;
}
.nk-footer-brand-name { font-size: 1.35rem; font-weight: 900; color: #fff; display: block; margin-bottom: 12px; }
.nk-footer-brand p { font-size: 0.83rem; line-height: 1.7; color: rgba(255,255,255,0.55); margin-bottom: 18px; }
.nk-footer-social { display: flex; gap: 9px; }
.nk-social-btn {
    width: 36px; height: 36px; border-radius: 8px;
    background: rgba(255,255,255,0.1);
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-size: 0.9rem;
    transition: background 0.25s, transform 0.2s;
}
.nk-social-btn:hover { background: #0060A1; transform: translateY(-2px); }
.nk-footer-col h4 {
    font-size: 0.88rem; font-weight: 800; color: #fff;
    text-transform: uppercase; letter-spacing: 0.5px;
    margin-bottom: 14px; padding-bottom: 8px;
    border-bottom: 2px solid rgba(255,255,255,0.1);
}
.nk-footer-col ul { display: flex; flex-direction: column; gap: 8px; }
.nk-footer-col ul li a {
    font-size: 0.82rem; color: rgba(255,255,255,0.55);
    transition: color 0.2s, padding-left 0.2s;
    display: flex; align-items: flex-start; gap: 7px;
}
.nk-footer-col ul li a:hover { color: #FFD700; padding-left: 4px; }
.nk-footer-col ul li a i { font-size: 0.7rem; color: #0088cc; margin-top: 3px; flex-shrink: 0; }
.nk-footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 18px 0;
    display: flex; justify-content: space-between;
    align-items: center; flex-wrap: wrap; gap: 8px;
}
.nk-footer-bottom p { font-size: 0.78rem; color: rgba(255,255,255,0.35); }
.nk-footer-bottom a { color: rgba(255,255,255,0.45); }
.nk-footer-bottom a:hover { color: #FFD700; }

/* ── Scroll animations ───────────────────────────────────── */
.nk-fade-in {
    opacity: 0; transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.nk-fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
    .nk-services-grid  { grid-template-columns: repeat(2, 1fr); }
    .nk-why-grid       { grid-template-columns: repeat(2, 1fr); }
    .nk-pricing-grid   { grid-template-columns: 1fr; gap: 16px; }
    .nk-pricing-card.is-popular { transform: none; }
    .nk-doctor-card    { flex: 0 0 calc(50% - 11px); }
    .nk-footer-grid    { grid-template-columns: 1fr 1fr; }
    .nk-slider-prev    { left: 5px; }
    .nk-slider-next    { right: 5px; }
}
@media (max-width: 768px) {
    .nk-nav, .nk-btn-branch { display: none; }
    .nk-hamburger { display: block; }
    .nk-slide-visual { display: none; }
    .nk-slide { min-height: 400px; }
    .nk-services-grid  { grid-template-columns: 1fr; }
    .nk-why-grid       { grid-template-columns: 1fr; }
    .nk-doctor-card    { flex: 0 0 100%; }
    .nk-trust-grid     { grid-template-columns: 1fr; }
    .nk-trust-item     { border-right: none; border-bottom: 1px solid #dce9f7; }
    .nk-trust-item:last-child { border-bottom: none; }
    .nk-process-layout { grid-template-columns: 1fr; }
    .nk-appointment-layout { grid-template-columns: 1fr; }
    .nk-news-layout    { grid-template-columns: 1fr; }
    .nk-pricing-grid   { grid-template-columns: 1fr; }
    .nk-pricing-card.is-popular { transform: none; }
    .nk-footer-grid    { grid-template-columns: 1fr; }
    .nk-form-row       { grid-template-columns: 1fr; }
    .nk-floating       { right: 8px; }
    .nk-float-btn      { width: 44px; height: 44px; }
    .nk-slide-stats    { gap: 16px; }
    .nk-slider-btn     { width: 36px; height: 36px; }
    .nk-slider-prev    { left: 5px; }
    .nk-slider-next    { right: 5px; }
}