/* ============================================================
   VPN-Keenetic.ru — Main Stylesheet
   Light theme with falling stars, orange & black accents
   ============================================================ */

/* --- CSS Variables --- */
:root {
    --orange: #FF6B00;
    --orange-dark: #E55F00;
    --orange-light: #FFF1E6;
    --black: #1A1A2E;
    --black-light: #2D2D44;
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px -5px rgba(0,0,0,0.08), 0 4px 10px -5px rgba(0,0,0,0.04);
    --transition: 0.2s ease;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

/* --- Reset --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--gray-50);color:var(--gray-800);line-height:1.7;overflow-x:hidden}
a{color:var(--orange);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--orange-dark)}
img{max-width:100%;height:auto}
code{font-family:var(--mono);background:var(--gray-100);padding:2px 6px;border-radius:4px;font-size:0.9em;color:var(--orange-dark)}
pre{overflow-x:auto}
ul,ol{padding-left:1.5rem}
.container{max-width:1200px;margin:0 auto;padding:0 1.5rem}

/* --- Stars Canvas --- */
#stars-canvas{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:0;opacity:0.4}

/* --- Header --- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--gray-200)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:1.5rem}
.logo{display:flex;align-items:center;gap:0.5rem;color:var(--black);font-weight:700;font-size:1.2rem;flex-shrink:0}
.logo:hover{color:var(--orange)}
.logo-text{letter-spacing:-0.02em}
.logo-dot{color:var(--orange)}
.main-nav{display:flex;gap:0.25rem;align-items:center}
.nav-link{padding:0.5rem 0.85rem;border-radius:8px;color:var(--gray-600);font-size:0.9rem;font-weight:500;transition:all var(--transition)}
.nav-link:hover,.nav-link.active{background:var(--orange-light);color:var(--orange)}
.header-actions{display:flex;align-items:center;gap:0.5rem;flex-shrink:0}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px;width:36px}
.burger span{display:block;width:100%;height:2px;background:var(--gray-700);border-radius:2px;transition:0.3s}
.burger.active span:nth-child(1){transform:rotate(45deg)translate(5px,5px)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){transform:rotate(-45deg)translate(5px,-5px)}

/* --- Buttons --- */
.btn{display:inline-block;padding:0.7rem 1.5rem;border-radius:var(--radius);font-weight:600;font-size:0.95rem;text-align:center;cursor:pointer;border:none;transition:all var(--transition);position:relative;overflow:hidden}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:var(--orange-dark);color:#fff;transform:translateY(-1px);box-shadow:0 6px 20px rgba(255,107,0,0.3)}
.btn-black{background:var(--black);color:#fff}
.btn-black:hover{background:var(--black-light);color:#fff;transform:translateY(-1px);box-shadow:0 6px 20px rgba(26,26,46,0.3)}
.btn-lg{padding:1rem 2.5rem;font-size:1.1rem;border-radius:var(--radius-lg)}
.btn-sm{padding:0.45rem 1rem;font-size:0.85rem}
.btn-full{width:100%}

/* --- Sections --- */
.section{padding:4rem 0;position:relative;z-index:2}
.section-alt{background:var(--white);border-top:1px solid var(--gray-200);border-bottom:1px solid var(--gray-200)}
.section-title{font-size:2.2rem;font-weight:800;margin-bottom:2rem;color:var(--black);text-align:center}
.accent{color:var(--orange)}

/* --- Hero --- */
.hero{text-align:center;padding:5rem 0 4rem;position:relative;z-index:2;background:linear-gradient(180deg,var(--white) 0%,var(--gray-50) 100%)}
.hero-sm{padding:3rem 0 2rem}
.hero-title{font-size:2.8rem;font-weight:900;line-height:1.2;margin-bottom:1rem;color:var(--black)}
.hero-subtitle{font-size:1.2rem;color:var(--gray-500);max-width:700px;margin:0 auto 2rem}
.hero-buttons{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap;margin-bottom:2.5rem}
.hero-features{display:flex;justify-content:center;gap:2.5rem;flex-wrap:wrap}
.feature-item{display:flex;align-items:center;gap:0.5rem;color:var(--gray-600);font-weight:500}
.feature-icon{font-size:1.5rem}

/* --- Info Grid --- */
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem;margin-top:2rem}
.info-card{background:var(--white);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow);border:1px solid var(--gray-200);transition:transform var(--transition),box-shadow var(--transition)}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.info-card h3{font-size:1.25rem;margin-bottom:0.75rem;color:var(--black)}
.info-card p{color:var(--gray-600);font-size:0.95rem}

/* --- Why Grid --- */
.why-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;margin-top:2rem}
.why-card{background:var(--gray-50);border-radius:var(--radius-lg);padding:2rem;border:1px solid var(--gray-200);transition:transform var(--transition)}
.why-card:hover{transform:translateY(-2px)}
.why-card h3{font-size:1.15rem;color:var(--black);margin-bottom:0.5rem}
.why-card p{color:var(--gray-600);font-size:0.95rem}

/* --- Models Grid --- */
.models-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.model-card{background:var(--white);border-radius:var(--radius-lg);padding:1.75rem;box-shadow:var(--shadow);border:1px solid var(--gray-200);display:flex;flex-direction:column;gap:0.75rem;transition:transform var(--transition)}
.model-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.model-card h3{font-size:1.1rem;color:var(--black)}
.model-card p{color:var(--gray-600);font-size:0.9rem;flex:1}
.model-card .btn{margin-top:auto;align-self:flex-start}

/* --- Model Detail --- */
.model-detail{background:var(--white);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow);border:1px solid var(--gray-200)}
.model-info h3{margin:1rem 0 0.5rem;color:var(--black)}
.model-info ol li{margin-bottom:0.5rem;color:var(--gray-700)}

/* --- Article Content --- */
.article-content{max-width:860px;margin:0 auto}
.article-content h2{font-size:1.8rem;margin:2.5rem 0 1rem;color:var(--black)}
.article-content h3{font-size:1.25rem;margin:1.5rem 0 0.75rem;color:var(--gray-800)}
.article-content p{margin-bottom:1rem;color:var(--gray-700)}
.article-content .styled-list{list-style:none;padding-left:0}
.article-content .styled-list li{padding:0.35rem 0 0.35rem 1.75rem;position:relative;color:var(--gray-700)}
.article-content .styled-list li::before{content:'▸';position:absolute;left:0;color:var(--orange);font-weight:bold}

/* --- Steps Visual --- */
.steps-visual{display:flex;flex-direction:column;gap:1.25rem;margin:1.5rem 0}
.step{display:flex;gap:1rem;align-items:flex-start}
.step-num{flex-shrink:0;width:44px;height:44px;background:var(--orange);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.2rem}
.step-text strong{display:block;color:var(--black);margin-bottom:0.25rem}
.step-text p{color:var(--gray-600);margin:0}

/* --- Step Block --- */
.step-block{margin-bottom:2.5rem;background:var(--white);border-radius:var(--radius-lg);padding:2rem;border:1px solid var(--gray-200);box-shadow:var(--shadow-sm)}
.step-block h2{display:flex;align-items:center;gap:0.75rem;margin-top:0!important}
.step-badge{display:inline-flex;align-items:center;justify-content:center;background:var(--orange);color:#fff;font-size:0.8rem;font-weight:800;padding:0.25rem 0.75rem;border-radius:20px;white-space:nowrap}

/* --- Code Block --- */
.code-block{background:var(--black);border-radius:var(--radius);padding:1.25rem;margin:1rem 0;overflow-x:auto;position:relative}
.code-block pre{margin:0}
.code-block code{background:none;color:#E5E7EB;font-size:0.85rem;line-height:1.6;padding:0}
.code-block::before{content:'$';position:absolute;top:0.5rem;right:1rem;color:var(--gray-500);font-size:0.75rem;font-family:var(--mono)}

/* --- Warning / Info / CTA Boxes --- */
.warning-box,.info-box,.cta-box{padding:1.25rem 1.5rem;border-radius:var(--radius);margin:1rem 0}
.warning-box{background:#FFF8F0;border:1px solid #FFD8A8;color:var(--gray-700)}
.info-box{background:#F0F7FF;border:1px solid #B8D8FF;color:var(--gray-700)}
.cta-box{background:var(--orange-light);border:1px solid #FFD8A8;text-align:center;padding:2rem}
.cta-box p{font-size:1.2rem;font-weight:600;color:var(--black);margin-bottom:1rem}

/* --- CTA Section --- */
.cta-section{background:linear-gradient(135deg,var(--black) 0%,var(--black-light) 100%);color:#fff;text-align:center;padding:4rem 0;position:relative;z-index:2}
.cta-section h2{font-size:2rem;margin-bottom:0.75rem}
.cta-section p{color:var(--gray-400);margin-bottom:2rem}
.cta-section .btn-black{background:var(--white);color:var(--black)}
.cta-section .btn-black:hover{background:var(--gray-200);box-shadow:0 6px 20px rgba(255,255,255,0.15)}
.cta-section .btn{margin:0 0.5rem}

/* --- Tables --- */
.table-wrapper{overflow-x:auto;margin:1rem 0}
.compare-table{width:100%;border-collapse:collapse;font-size:0.9rem}
.compare-table th{background:var(--black);color:#fff;padding:0.75rem 1rem;text-align:left;font-weight:600}
.compare-table td{padding:0.75rem 1rem;border-bottom:1px solid var(--gray-200)}
.compare-table tr:nth-child(even){background:var(--gray-50)}
.compare-table tr:hover{background:var(--orange-light)}

/* --- FAQ --- */
.faq-list{display:flex;flex-direction:column;gap:1.5rem}
.faq-item{background:var(--white);border-radius:var(--radius);padding:1.5rem;border:1px solid var(--gray-200);box-shadow:var(--shadow-sm)}
.faq-item h3{color:var(--black);font-size:1.15rem;margin-bottom:0.5rem}
.faq-item p{color:var(--gray-600)}
.faq-item .code-block{margin-top:0.5rem}

/* --- Troubleshoot --- */
.troubleshoot{display:flex;flex-direction:column;gap:1rem;margin:1rem 0}
.ts-item{background:var(--white);border-radius:var(--radius);padding:1rem 1.25rem;border-left:4px solid var(--orange);box-shadow:var(--shadow-sm)}
.ts-item strong{color:var(--black);display:block;margin-bottom:0.25rem}
.ts-item p{color:var(--gray-600);margin:0}

/* --- Auth Section --- */
.auth-section{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 200px);padding:4rem 0}
.auth-card{background:var(--white);border-radius:var(--radius-lg);padding:2.5rem;max-width:460px;width:100%;text-align:center;box-shadow:var(--shadow-lg);border:1px solid var(--gray-200)}
.auth-icon{margin-bottom:1rem}
.auth-card h2{font-size:1.5rem;color:var(--black);margin-bottom:0.5rem}
.auth-card p{color:var(--gray-500);font-size:0.9rem;margin-bottom:1.5rem}
.auth-divider{display:flex;align-items:center;gap:1rem;margin:2rem 0;color:var(--gray-400);font-size:0.8rem}
.auth-divider::before,.auth-divider::after{content:'';flex:1;height:1px;background:var(--gray-200)}
.auth-benefits{display:flex;flex-direction:column;gap:0.75rem}
.benefit-item{display:flex;align-items:center;gap:0.75rem;color:var(--gray-600);font-size:0.9rem}
.benefit-icon{font-size:1.2rem}
.loading-text{color:var(--gray-400);font-size:0.9rem;padding:1.5rem 0}

/* --- Profile --- */
.profile-card{background:var(--white);border-radius:var(--radius-lg);padding:2.5rem;max-width:520px;margin:0 auto;text-align:center;box-shadow:var(--shadow-lg);border:1px solid var(--gray-200)}
.profile-header{margin-bottom:2rem}
.profile-avatar{width:96px;height:96px;border-radius:50%;object-fit:cover;border:3px solid var(--orange)}
.profile-avatar-placeholder{width:96px;height:96px;border-radius:50%;background:var(--orange);color:#fff;display:flex;align-items:center;justify-content:center;font-size:2.5rem;font-weight:bold;margin:0 auto}
.profile-header h2{font-size:1.5rem;color:var(--black);margin:0.75rem 0 0.25rem}
.profile-username{color:var(--gray-400);font-size:0.9rem}
.profile-badge{display:inline-block;background:#E8F5E9;color:#2E7D32;font-size:0.8rem;padding:0.2rem 0.75rem;border-radius:20px;margin-top:0.5rem}
.profile-details{text-align:left;margin-bottom:2rem}
.detail-row{display:flex;justify-content:space-between;padding:0.6rem 0;border-bottom:1px solid var(--gray-100)}
.detail-label{color:var(--gray-500);font-size:0.85rem}
.detail-value{color:var(--gray-800);font-weight:500;font-size:0.9rem}
.profile-actions{display:flex;gap:0.75rem;justify-content:center}

/* --- Footer --- */
.site-footer{background:var(--black);color:var(--gray-300);padding:3rem 0 0;position:relative;z-index:2;margin-top:auto}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2rem}
.footer-col h4{color:#fff;margin-bottom:1rem;font-size:1rem}
.footer-col p{font-size:0.9rem;line-height:1.6}
.footer-col a{display:block;color:var(--gray-400);font-size:0.9rem;padding:0.2rem 0;transition:color var(--transition)}
.footer-col a:hover{color:var(--orange)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);margin-top:2rem;padding:1.25rem 0;text-align:center;font-size:0.8rem;color:var(--gray-500)}

/* ============================================================
   Admin Styles
   ============================================================ */
.admin-body{background:var(--gray-100)}
.admin-container{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:2rem}
.admin-login-card{background:var(--white);border-radius:var(--radius-lg);padding:2.5rem;max-width:400px;width:100%;box-shadow:var(--shadow-lg)}
.admin-login-header{text-align:center;margin-bottom:2rem}
.admin-login-header h2{color:var(--black);font-size:1.5rem}
.admin-login-header p{color:var(--gray-400);font-size:0.85rem}
.admin-login-form{display:flex;flex-direction:column;gap:1rem}
.form-group{display:flex;flex-direction:column;gap:0.35rem}
.form-group label{font-size:0.85rem;font-weight:600;color:var(--gray-700)}
.form-group input{padding:0.7rem 1rem;border:1px solid var(--gray-300);border-radius:8px;font-size:0.95rem;transition:border-color var(--transition);outline:none}
.form-group input:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,107,0,0.1)}
.form-error{background:#FFF0F0;color:#C62828;padding:0.6rem 1rem;border-radius:8px;font-size:0.85rem}
.admin-back-link{display:block;text-align:center;margin-top:1.5rem;color:var(--gray-400);font-size:0.85rem}
.admin-back-link:hover{color:var(--orange)}

/* Admin Layout */
.admin-layout{display:flex;min-height:100vh}
.admin-sidebar{width:240px;background:var(--black);color:#fff;display:flex;flex-direction:column;flex-shrink:0}
.admin-logo{padding:1.5rem;border-bottom:1px solid rgba(255,255,255,0.08)}
.admin-logo a{color:#fff;font-weight:700;font-size:1.1rem}
.admin-nav{display:flex;flex-direction:column;padding:1rem 0;flex:1}
.admin-nav-item{display:flex;align-items:center;gap:0.75rem;padding:0.75rem 1.5rem;color:var(--gray-400);font-size:0.9rem;transition:all var(--transition)}
.admin-nav-item:hover,.admin-nav-item.active{background:rgba(255,255,255,0.06);color:#fff}
.admin-nav-logout{margin-top:auto;border-top:1px solid rgba(255,255,255,0.08)}
.nav-icon{font-size:1.1rem}
.admin-main{flex:1;display:flex;flex-direction:column}
.admin-topbar{display:flex;align-items:center;justify-content:space-between;padding:1rem 2rem;background:var(--white);border-bottom:1px solid var(--gray-200)}
.admin-topbar h1{font-size:1.3rem;color:var(--black)}
.admin-topbar-actions{display:flex;gap:0.75rem;align-items:center}
.admin-user-badge{font-size:0.85rem;color:var(--gray-500)}
.admin-search{padding:0.5rem 1rem;border:1px solid var(--gray-300);border-radius:8px;font-size:0.9rem;outline:none;width:220px}
.admin-search:focus{border-color:var(--orange)}
.admin-content{padding:2rem;flex:1}
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-bottom:2rem}
.stat-card{background:var(--white);border-radius:var(--radius);padding:1.5rem;display:flex;align-items:center;gap:1rem;box-shadow:var(--shadow);border:1px solid var(--gray-200)}
.stat-icon{font-size:2rem;flex-shrink:0}
.stat-info{display:flex;flex-direction:column}
.stat-value{font-size:1.8rem;font-weight:800;color:var(--black);line-height:1.2}
.stat-label{font-size:0.85rem;color:var(--gray-500)}
.stat-green .stat-value{color:#2E7D32}
.stat-orange .stat-value{color:var(--orange)}

.admin-card{background:var(--white);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow);border:1px solid var(--gray-200)}
.admin-card h3{color:var(--black);margin-bottom:1rem}
.quick-actions{display:flex;gap:0.75rem;flex-wrap:wrap}

/* Admin Table */
.admin-table{width:100%;border-collapse:collapse;font-size:0.85rem}
.admin-table th{background:var(--gray-100);padding:0.7rem 0.85rem;text-align:left;font-weight:600;color:var(--gray-600);font-size:0.8rem;text-transform:uppercase;letter-spacing:0.05em;border-bottom:2px solid var(--gray-200)}
.admin-table td{padding:0.6rem 0.85rem;border-bottom:1px solid var(--gray-100);color:var(--gray-700)}
.admin-table tr:hover td{background:var(--orange-light)}
.loading-cell{text-align:center;color:var(--gray-400);padding:2rem!important}
.status-badge{display:inline-block;padding:0.2rem 0.6rem;border-radius:20px;font-size:0.75rem;font-weight:600}
.status-active{background:#E8F5E9;color:#2E7D32}
.status-inactive{background:#FFF0F0;color:#C62828}
.table-info{margin-top:0.75rem;text-align:right;color:var(--gray-400);font-size:0.8rem}
.btn-table{padding:0.3rem 0.6rem;font-size:0.75rem;border-radius:6px;border:none;cursor:pointer;font-weight:600;transition:all var(--transition)}
.btn-table-toggle{background:var(--gray-100);color:var(--gray-600)}
.btn-table-toggle:hover{background:var(--gray-200)}
.btn-table-delete{background:#FFF0F0;color:#C62828}
.btn-table-delete:hover{background:#FFD8D8}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
    .info-grid,.models-grid{grid-template-columns:repeat(2,1fr)}
    .why-grid{grid-template-columns:1fr}
    .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width: 768px) {
    .hero-title{font-size:2rem}
    .section-title{font-size:1.6rem}
    .info-grid,.models-grid{grid-template-columns:1fr}
    .why-grid{grid-template-columns:1fr}
    .hero-features{flex-wrap:wrap;gap:1rem}
    .burger{display:flex}
    .main-nav{display:none;position:absolute;top:64px;left:0;width:100%;background:var(--white);flex-direction:column;padding:1rem;border-bottom:1px solid var(--gray-200);box-shadow:var(--shadow-lg)}
    .main-nav.open{display:flex}
    .nav-link{padding:0.75rem 1rem;width:100%}
    .header-actions .btn-sm{padding:0.35rem 0.7rem;font-size:0.8rem}
    .footer-inner{grid-template-columns:1fr}
    .compare-table{font-size:0.75rem}
    .step{flex-direction:column}
    .stats-grid{grid-template-columns:1fr}
    .admin-layout{flex-direction:column}
    .admin-sidebar{width:100%}
    .admin-nav{flex-direction:row;overflow-x:auto;padding:0.5rem}
    .admin-nav-item{white-space:nowrap;padding:0.5rem 1rem}
    .cta-section{padding:2.5rem 1rem}
}
@media (max-width: 480px) {
    .hero-title{font-size:1.6rem}
    .hero-buttons{flex-direction:column;align-items:center}
    .hero-buttons .btn{width:100%;max-width:300px}
    .container{padding:0 1rem}
}