:root {
    --primary: #fe2c55;
    --secondary: #25f4ee;
    --dark: #0a0a0a;
    --card-bg: #161823;
    --text: #ffffff;
    --gray: #8a8b91;
    --success: #00f2ea;
    --danger: #fe2c55;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--dark);
    color: var(--text);
}

.navbar {
    background: rgba(18, 18, 18, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    color: white;
}

.badge {
    background: var(--primary);
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    vertical-align: middle;
}

.user-info {
    color: var(--gray);
    margin-right: 1.5rem;
    font-size: 0.9rem;
}

.logout-btn {
    text-decoration: none;
    color: var(--primary);
    font-size: 0.9rem;
}

.main-wrapper {
    max-width: 1200px;
    margin: 3rem auto;
    padding: 0 2rem;
    min-height: calc(100vh - 200px);
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.form-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

input {
    flex: 1;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    padding: 12px 16px;
    color: white;
    outline: none;
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary { background: var(--primary); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-success { background: var(--success); color: #000; }

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th {
    text-align: left;
    color: var(--gray);
    font-weight: 500;
    padding: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

td {
    padding: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 0.9rem;
}

footer {
    text-align: center;
    padding: 3rem;
    color: var(--gray);
    font-size: 0.8rem;
}

/* Landing / login page */
.landing-page {
    display: grid;
    gap: 4rem;
}

.landing-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.8fr);
    gap: 2rem;
    align-items: center;
    min-height: 620px;
}

.landing-copy {
    position: relative;
    padding: 2rem 0;
}

.brand-lockup {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.brand-mark {
    display: inline-grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--secondary), var(--primary));
    color: #050505;
    font-weight: 900;
    font-size: 1.4rem;
    box-shadow: 0 12px 36px rgba(37, 244, 238, 0.18);
}

.brand-name {
    font-size: 1.35rem;
    font-weight: 800;
}

.landing-badge {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 0.45rem 0.75rem;
    border: 1px solid rgba(37, 244, 238, 0.32);
    border-radius: 999px;
    color: var(--secondary);
    background: rgba(37, 244, 238, 0.08);
    font-size: 0.82rem;
    font-weight: 700;
    margin-bottom: 1.2rem;
}

.landing-copy h1 {
    margin: 0;
    max-width: 760px;
    font-size: clamp(2.4rem, 6vw, 5.3rem);
    line-height: 1.02;
}

.landing-lead {
    max-width: 660px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 1.15rem;
    line-height: 1.7;
    margin: 1.25rem 0 0;
}

.landing-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.landing-link {
    color: var(--secondary);
    text-decoration: none;
    font-weight: 700;
}

.landing-zalo-inline,
.price-card .btn,
.contact-phone {
    text-decoration: none;
}

.login-panel {
    border-radius: 8px;
    background: rgba(22, 24, 35, 0.72);
    backdrop-filter: blur(18px);
}

.login-panel h2 {
    margin: 0 0 0.5rem;
    font-size: 1.8rem;
}

.login-panel p {
    margin: 0 0 1.5rem;
    color: var(--gray);
}

.login-error {
    background: rgba(254, 44, 85, 0.12);
    color: #ff8ea4;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
}

.license-login-form {
    display: grid;
    gap: 1rem;
}

.license-login-form label {
    color: rgba(255, 255, 255, 0.76);
    font-weight: 700;
    font-size: 0.9rem;
}

.license-input-wrap {
    position: relative;
}

.license-input-wrap svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    fill: var(--gray);
    pointer-events: none;
}

.license-input-wrap input {
    width: 100%;
    box-sizing: border-box;
    padding-left: 44px;
}

.section-heading {
    max-width: 720px;
    margin-bottom: 1.4rem;
}

.section-heading h2 {
    margin: 0;
    font-size: clamp(1.8rem, 4vw, 3rem);
}

.section-heading p {
    color: var(--gray);
    line-height: 1.7;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.benefit-item {
    display: flex;
    gap: 1rem;
    padding: 1.15rem;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 8px;
    background: rgba(255,255,255,0.04);
}

.benefit-icon {
    display: inline-grid;
    place-items: center;
    flex: 0 0 auto;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: rgba(37, 244, 238, 0.12);
}

.benefit-icon svg {
    width: 20px;
    height: 20px;
    fill: var(--secondary);
}

.benefit-item h3 {
    margin: 0 0 0.4rem;
    font-size: 1rem;
}

.benefit-item p {
    margin: 0;
    color: var(--gray);
    line-height: 1.55;
    font-size: 0.92rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.price-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 410px;
    padding: 1.35rem;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.055);
    backdrop-filter: blur(14px);
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.price-card:hover {
    transform: translateY(-4px);
    border-color: rgba(37, 244, 238, 0.42);
    background: rgba(255,255,255,0.075);
}

.price-card.featured {
    border-color: rgba(37, 244, 238, 0.58);
    box-shadow: 0 18px 48px rgba(37, 244, 238, 0.12);
}

.popular-badge {
    position: absolute;
    right: 1rem;
    top: 1rem;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    background: var(--secondary);
    color: #050505;
    font-size: 0.76rem;
    font-weight: 800;
}

.plan-icon {
    display: inline-grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 8px;
    background: rgba(254, 44, 85, 0.14);
    margin-bottom: 1rem;
}

.featured .plan-icon {
    background: rgba(37, 244, 238, 0.16);
}

.plan-icon svg {
    width: 24px;
    height: 24px;
    fill: var(--secondary);
}

.price-card h3 {
    margin: 0 0 1rem;
    font-size: 1.35rem;
}

.price {
    margin-bottom: 1rem;
}

.price strong {
    font-size: 1.7rem;
}

.price span {
    color: var(--gray);
    margin-left: 0.25rem;
}

.price-card ul {
    display: grid;
    gap: 0.7rem;
    padding: 0;
    margin: 0 0 1.25rem;
    list-style: none;
    color: rgba(255,255,255,0.78);
    line-height: 1.45;
}

.price-card li::before {
    content: "✓";
    color: var(--secondary);
    font-weight: 900;
    margin-right: 0.5rem;
}

.price-card .btn {
    margin-top: auto;
    text-align: center;
}

.contact-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 1.4rem;
    border-radius: 8px;
    background: rgba(255,255,255,0.055);
    border: 1px solid rgba(255,255,255,0.1);
}

.contact-section h2 {
    margin: 0 0 0.4rem;
}

.contact-section p {
    margin: 0;
    color: var(--gray);
}

.contact-phone {
    color: #050505;
    background: var(--secondary);
    padding: 0.85rem 1rem;
    border-radius: 8px;
    font-weight: 800;
    white-space: nowrap;
}

.zalo-float {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 1100;
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.7rem 0.9rem;
    border-radius: 999px;
    background: #0068ff;
    color: #fff;
    text-decoration: none;
    box-shadow: 0 14px 38px rgba(0, 104, 255, 0.35);
    transition: transform 0.2s ease;
}

.zalo-float:hover {
    transform: translateY(-2px);
}

.zalo-float span {
    display: inline-grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: #fff;
    color: #0068ff;
    font-weight: 900;
}

.zalo-float strong {
    font-size: 0.92rem;
}

.landing-page .btn:hover {
    transform: translateY(-1px);
}

@media (max-width: 980px) {
    .landing-hero,
    .pricing-grid {
        grid-template-columns: 1fr 1fr;
    }

    .landing-copy {
        grid-column: 1 / -1;
    }

    .benefits-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 680px) {
    .main-wrapper {
        margin: 1.5rem auto;
        padding: 0 1rem;
    }

    .landing-page {
        gap: 2.5rem;
    }

    .landing-hero,
    .pricing-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
    }

    .landing-hero {
        min-height: auto;
    }

    .contact-section {
        align-items: flex-start;
        flex-direction: column;
    }

    .contact-phone {
        white-space: normal;
    }

    .zalo-float {
        right: 14px;
        left: 14px;
        justify-content: center;
    }
}