/* ==========================================
   BOOTROM ENTERPRISE v3.0
   TIN HỌC SÀI GÒN COMPUTER
========================================== */

:root {
    --bg: #020817;
    --bg2: #07152f;
    --card: #081b3d;
    --card2: #0b224d;
    --primary: #0ea5ff;
    --primary2: #0066ff;
    --green: #00d26a;
    --orange: #ff9900;
    --purple: #8a5cff;
    --text: #ffffff;
    --muted: #9fb4d8;
    --border: rgba(14,165,255,.15);
    --shadow: 0 0 25px rgba(14,165,255,.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background: radial-gradient(circle at top, #07152f, #020817 60%);
    color: var(--text);
    font-family: "Segoe UI", Arial, sans-serif;
    overflow-x: hidden;
}

img {
    display: block;
    max-width: 100%;
}

a {
    text-decoration: none;
}

ul {
    list-style: none;
}

.bootrom-container {
    width: 100%;
    max-width: 1600px;
    margin: auto;
    padding: 0 30px;
}

/* ==========================================
   NAVBAR
========================================== */
/* ===================================
   NAVBAR
=================================== */

.navbar {
    position: sticky;
    top: 0;
    z-index: 999;
    background: rgba(2,12,35,.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(14,165,255,.12);
}

.nav-wrap {
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* LOGO */

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
    text-decoration: none;
}

    .logo img {
        width: 58px;
        height: 58px;
        object-fit: contain;
    }

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo strong {
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.logo span {
    font-size: 12px;
    color: #0ea5ff;
    font-weight: 700;
    margin-top: 4px;
    letter-spacing: 1px;
}

/* MENU */

.menu {
    display: flex;
    align-items: center;
    gap: 45px;
    list-style: none;
}

    .menu a {
        color: #d7e6ff;
        font-size: 15px;
        font-weight: 600;
        text-decoration: none;
        position: relative;
        transition: .3s;
    }

        .menu a:hover,
        .menu a.active {
            color: #0ea5ff;
        }

            .menu a.active::after,
            .menu a:hover::after {
                content: "";
                position: absolute;
                left: 0;
                bottom: -10px;
                width: 100%;
                height: 3px;
                background: #0ea5ff;
                border-radius: 30px;
            }

/* LOGIN */

.btn-login {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 700;
    color: #fff;
    background: linear-gradient( 135deg, #0ea5ff, #0066ff );
    transition: .3s;
}

    .btn-login:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 25px rgba(14,165,255,.35);
    }

/* ==========================================
   HERO
========================================== */

.hero {
    padding: 80px 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    align-items: center;
}

.version {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 50px;
    background: #082452;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 25px;
}

.hero h1 {
    font-size: 86px;
    line-height: 1;
    font-weight: 900;
    margin-bottom: 25px;
}

    .hero h1 span {
        display: block;
        color: var(--primary);
    }

.hero p {
    font-size: 22px;
    line-height: 1.8;
    color: var(--muted);
    margin-bottom: 35px;
}

.hero-list {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 15px;
    margin-bottom: 35px;
}

    .hero-list li {
        color: #d7e6ff;
        font-size: 18px;
    }

        .hero-list li::before {
            content: "✓";
            color: var(--primary);
            margin-right: 10px;
        }

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn-primary,
.btn-secondary {
    padding: 18px 30px;
    border-radius: 14px;
    font-weight: 700;
}

.btn-primary {
    color: #fff;
    background: linear-gradient( 135deg, var(--primary), var(--primary2) );
}

.btn-secondary {
    border: 1px solid var(--primary);
    color: #fff;
}

.hero-right img {
    border-radius: 24px;
    border: 1px solid var(--border);
    box-shadow: 0 0 60px rgba(14,165,255,.20);
}

/* ==========================================
   STATS
========================================== */

.stats {
    padding: 30px 0 80px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 25px;
}

.stat-box {
    background: linear-gradient( 135deg, #07152f, #0a1f47 );
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 35px;
    text-align: center;
    box-shadow: var(--shadow);
}

    .stat-box h2 {
        font-size: 48px;
        color: var(--primary);
        margin-bottom: 10px;
    }

    .stat-box p {
        color: #d7e6ff;
    }

/* ==========================================
   SECTION TITLE
========================================== */

.section-title {
    text-align: center;
    font-size: 52px;
    font-weight: 800;
    margin-bottom: 60px;
}

    .section-title::after {
        content: "";
        width: 120px;
        height: 4px;
        display: block;
        margin: 15px auto 0;
        background: var(--primary);
        border-radius: 50px;
    }

/* ==========================================
   FEATURES
========================================== */

.features {
    padding: 100px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 25px;
}

.feature-card {
    background: linear-gradient( 135deg, #081b3d, #0c2657 );
    border-radius: 24px;
    padding: 35px;
    border: 1px solid var(--border);
    transition: .3s;
}

    .feature-card:hover {
        transform: translateY(-8px);
    }

.feature-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 34px;
    margin-bottom: 20px;
}

.blue {
    background: #003e87;
}

.green {
    background: #005a39;
}

.orange {
    background: #734400;
}

.purple {
    background: #43257d;
}

.feature-card h3 {
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--muted);
    line-height: 1.8;
}

/* ==========================================
   SCREENSHOTS
========================================== */

.screens {
    padding: 100px 0;
}

.screen-grid {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 30px;
}

.screen-card {
    background: #081b3d;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border);
}

    .screen-card img {
        width: 100%;
        height: 350px;
        object-fit: cover;
    }

.screen-body {
    padding: 25px;
}

    .screen-body h3 {
        margin-bottom: 12px;
    }

    .screen-body p {
        color: var(--muted);
    }

/* ==========================================
   WORKFLOW
========================================== */

.workflow {
    padding: 100px 0;
}

.workflow-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 30px;
}

.step {
    text-align: center;
}

    .step span {
        width: 80px;
        height: 80px;
        margin: auto auto 20px;
        border-radius: 50%;
        display: flex;
        justify-content: center;
        align-items: center;
        background: linear-gradient( 135deg, var(--primary), var(--primary2) );
        font-size: 30px;
        font-weight: 700;
    }

    .step h3 {
        margin-bottom: 15px;
    }

    .step p {
        color: var(--muted);
        line-height: 1.8;
    }

/* ==========================================
   REGISTER + LOGIN
========================================== */

.register,
.login-box {
    padding: 100px 0;
}

.trial-form {
    max-width: 900px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 20px;
}

    .trial-form input {
        background: #081b3d;
        border: 1px solid #143e80;
        border-radius: 12px;
        padding: 16px;
        color: #fff;
    }

    .trial-form button {
        grid-column: 1/-1;
        border: none;
        padding: 18px;
        border-radius: 12px;
        background: linear-gradient( 135deg, var(--primary), var(--primary2) );
        color: #fff;
        font-size: 16px;
        font-weight: 700;
        cursor: pointer;
    }

/* ==========================================
   FOOTER
========================================== */

.footer {
    margin-top: 100px;
    background: #020817;
    border-top: 1px solid rgba(255,255,255,.06);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 40px;
    padding: 60px 0;
}

.footer h3,
.footer h4 {
    margin-bottom: 15px;
}

.footer p,
.footer li {
    color: var(--muted);
    margin-bottom: 10px;
}

.copyright {
    text-align: center;
    padding: 25px;
    color: var(--muted);
    border-top: 1px solid rgba(255,255,255,.05);
}

/* ==========================================
   TABLET
========================================== */

@media(max-width:992px) {

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

    .hero h1 {
        font-size: 64px;
    }

    .stats-grid {
        grid-template-columns: repeat(2,1fr);
    }

    .feature-grid {
        grid-template-columns: repeat(2,1fr);
    }

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

    .workflow-grid {
        grid-template-columns: repeat(2,1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2,1fr);
    }
}

/* ==========================================
   MOBILE
========================================== */

@media(max-width:768px) {

    .menu {
        display: none;
    }

    .hero {
        padding: 50px 0;
    }

        .hero h1 {
            font-size: 44px;
        }

        .hero p {
            font-size: 18px;
        }

    .hero-list {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .stats-grid,
    .feature-grid,
    .workflow-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .trial-form {
        grid-template-columns: 1fr;
    }

    .screen-card img {
        height: auto;
    }

    .section-title {
        font-size: 34px;
    }
}
/* ==========================
   COMPANY
========================== */

.company {
    padding: 80px 0;
}

.company-card {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    background: linear-gradient( 135deg, #081b3d, #0b224d );
    border-radius: 24px;
    padding: 50px;
    border: 1px solid rgba(14,165,255,.15);
}

.section-tag {
    display: inline-block;
    padding: 8px 16px;
    background: #082452;
    border-radius: 50px;
    color: #0ea5ff;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 20px;
}

.company-content h2 {
    font-size: 42px;
    margin-bottom: 20px;
}

.company-content p {
    line-height: 1.9;
    color: #cddcf8;
    margin-bottom: 15px;
}

.company-features {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 15px;
    margin-top: 20px;
}

.company-box {
    background: #07152f;
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 40px;
}

    .company-box i {
        font-size: 80px;
        color: #0ea5ff;
        margin-bottom: 20px;
    }

/* ==========================
   COPYRIGHT
========================== */

.copyright-section {
    padding: 0 0 80px;
}

.copyright-card {
    background: linear-gradient( 135deg, #081b3d, #0b224d );
    border-radius: 24px;
    padding: 50px;
    border: 1px solid rgba(14,165,255,.15);
}

.copyright-header {
    margin-bottom: 40px;
}

    .copyright-header h2 {
        font-size: 42px;
        margin: 20px 0;
    }

.copyright-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 20px;
}

.copyright-item {
    background: #07152f;
    border-radius: 16px;
    padding: 25px;
    text-align: center;
}

    .copyright-item i {
        font-size: 40px;
        color: #0ea5ff;
        margin-bottom: 15px;
        display: block;
    }

/* ==========================
   BOOTROM HIGHLIGHT
========================== */

.bootrom-highlight {
    padding: 0 0 80px;
}

.highlight-card {
    background: linear-gradient( 135deg, #081b3d, #0b224d );
    border-radius: 24px;
    padding: 50px;
    border: 1px solid rgba(14,165,255,.15);
}

    .highlight-card h3 {
        font-size: 32px;
        margin-bottom: 20px;
    }

    .highlight-card p {
        line-height: 1.9;
        color: #cddcf8;
        margin-bottom: 30px;
    }

.highlight-grid {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap: 15px;
}

    .highlight-grid div {
        background: #07152f;
        padding: 16px;
        border-radius: 12px;
    }

@media(max-width:992px) {

    .company-card {
        grid-template-columns: 1fr;
    }

    .copyright-grid {
        grid-template-columns: repeat(2,1fr);
    }

    .highlight-grid {
        grid-template-columns: repeat(2,1fr);
    }
}

@media(max-width:768px) {

    .company-features,
    .copyright-grid,
    .highlight-grid {
        grid-template-columns: 1fr;
    }

    .company-content h2,
    .copyright-header h2 {
        font-size: 30px;
    }
}

.company,
.copyright-section,
.bootrom-highlight {
    width: 100%;
    padding: 80px 0;
}

.company-card,
.copyright-card,
.highlight-card {
    max-width: 1400px;
    margin: auto;
    background: linear-gradient( 135deg, #081b3d, #0b224d );
    border: 1px solid rgba(14,165,255,.15);
    border-radius: 24px;
    padding: 50px;
    box-shadow: 0 0 30px rgba(14,165,255,.12);
}


@media(max-width:992px) {

    .menu {
        gap: 25px;
    }

    .logo strong {
        font-size: 18px;
    }
}

@media(max-width:768px) {

    .nav-wrap {
        height: 75px;
    }

    .menu {
        display: none;
    }

    .btn-login {
        padding: 10px 18px;
        font-size: 14px;
    }

    .logo img {
        width: 48px;
        height: 48px;
    }
}

/* ===================================
FOOTER
=================================== */

.footer {
     margin-top:120px;
    background: linear-gradient( 180deg, rgba(2,12,35,.95), #020b1f );
    border-top: 1px solid rgba(14,165,255,.12);
    
}

.footer-grid {
    display:grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    padding: 80px 0;
    
}

.footer-logo {
     width:70px;
    margin-bottom: 20px;
    
}

.footer h3 {
     font-size:24px;
    margin-bottom: 15px;
    
}

.footer h4 {
     margin-bottom:20px;
    color: #0ea5ff;
    
}

.footer p,
.footer li {
     color:#9fb4d8;
    line-height: 1.8;
    
}

.footer ul {
     list-style:none;
    padding: 0;
    
}

.footer li {
     margin-bottom:10px;
    
}

.footer-license {
     border-top: 1px solid rgba(14,165,255,.08);
    border-bottom: 1px solid rgba(14,165,255,.08);
    padding: 25px 0;
    
}

.license-box {
     display:flex;
    align-items: center;
    gap: 20px;
    
}

    .license-box i {
         font-size:42px;
        color: #0ea5ff;
       
    }

.copyright {
    text-align:center;
    padding: 25px;
    color: #7d95bc;
    font-size: 14px;
   
}

@media(max-width:992px) {

  
    .footer-grid {
        grid-template-columns: repeat(2,1fr);
    }

}

@media(max-width:768px) {

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

    .license-box {
        flex-direction: column;
        text-align: center;
    }

}
/* ===================================
LOGIN
=================================== */

.auth-section{


min-height:70vh;

display:flex;

justify-content:center;

align-items:center;

padding:80px 20px;


}

.auth-card{


width:100%;
max-width:520px;

background:
linear-gradient(
135deg,
#081b3d,
#0b224d
);

border:
1px solid rgba(14,165,255,.15);

border-radius:24px;

padding:40px;

box-shadow:
0 0 30px rgba(14,165,255,.12);


}

.auth-header{


text-align:center;

margin-bottom:30px;


}

.auth-header h1{


font-size:32px;

margin-bottom:10px;


}

.auth-header i{


color:#0ea5ff;


}

.auth-header p{


color:#9fb4d8;


}

.form-group{


margin-bottom:20px;


}

.form-group label{


display:block;

margin-bottom:8px;

font-weight:600;


}

.form-group input{


width:100%;

background:#07152f;

border:
1px solid rgba(14,165,255,.15);

border-radius:12px;

padding:15px;

color:#fff;


}

.btn-auth{


width:100%;

border:none;

border-radius:12px;

padding:16px;

font-size:16px;

font-weight:700;

color:#fff;

cursor:pointer;

background:
linear-gradient(
135deg,
#0ea5ff,
#0066ff
);


}

.alert-error{


background:
rgba(255,0,0,.15);

border:
1px solid rgba(255,0,0,.3);

color:#ffb3b3;

padding:12px;

border-radius:12px;

margin-bottom:20px;


}

.auth-footer{


margin-top:25px;

text-align:center;

color:#9fb4d8;


}

.auth-footer a{


color:#0ea5ff;

font-weight:700;

}
/* =========================================
   FEATURES PAGE
========================================= */

.hero-page{
    padding:120px 0 80px;
    background:linear-gradient(135deg,#081a36,#0d2958);
    color:#fff;
    text-align:center;
}

.hero-page-content{
    max-width:900px;
    margin:auto;
}

.hero-page h1{
    font-size:48px;
    margin:20px 0;
    line-height:1.3;
}

.hero-page p{
    font-size:18px;
    color:#b8c7e0;
    line-height:1.8;
}

.section-badge{
    display:inline-block;
    padding:8px 18px;
    border-radius:50px;
    background:rgba(14,165,255,.15);
    color:#0ea5ff;
    font-weight:700;
}

.about-section,
.features-section,
.workflow-section,
.benefits-section{
    padding:90px 0;
}

.about-grid,
.features-grid,
.benefits-grid{
    display:grid;
    gap:30px;
}

.about-grid{
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
}

.features-grid{
    grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
}

.benefits-grid{
    grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
}

.about-card,
.feature-card,
.benefit-card{
    background:linear-gradient(135deg,#081b3d,#0b224d);
    border:1px solid rgba(14,165,255,.15);
    border-radius:20px;
    padding:35px;
    transition:.3s;
}

.about-card:hover,
.feature-card:hover,
.benefit-card:hover{
    transform:translateY(-8px);
}

.about-card h3,
.feature-card h3,
.benefit-card h3{
    color:#fff;
    margin-bottom:15px;
}

.about-card p,
.feature-card p,
.benefit-card p{
    color:#9fb4d8;
    line-height:1.8;
}

.feature-card ul{
    margin-top:15px;
}

.feature-card li{
    padding:10px 0;
    color:#d7e6ff;
    border-bottom:1px solid rgba(255,255,255,.08);
}

.workflow{
    display:flex;
    justify-content:center;
    flex-wrap:wrap;
    gap:25px;
}

.step{
    width:200px;
    background:linear-gradient(135deg,#081b3d,#0b224d);
    border:1px solid rgba(14,165,255,.15);
    border-radius:20px;
    padding:30px;
    text-align:center;
}

.step span{
    width:60px;
    height:60px;
    display:flex;
    align-items:center;
    justify-content:center;
    margin:auto auto 15px;
    border-radius:50%;
    background:#0ea5ff;
    color:#fff;
    font-size:24px;
    font-weight:700;
}

.step h4{
    color:#fff;
}

.cta-section{
    padding:100px 0;
    background:linear-gradient(135deg,#081a36,#0d2958);
    text-align:center;
}

.cta-section h2{
    font-size:42px;
    color:#fff;
    margin-bottom:20px;
}

.cta-section p{
    color:#c7d5ec;
    margin-bottom:40px;
}

.cta-buttons{
    display:flex;
    justify-content:center;
    gap:20px;
    flex-wrap:wrap;
}

@media(max-width:768px){

    .hero-page h1{
        font-size:34px;
    }

    .workflow{
        flex-direction:column;
        align-items:center;
    }

    .step{
        width:100%;
        max-width:320px;
    }

}