/* Hreflang Checker AI — Dark Glass CSS */
:root {
    --bg-primary: #0a0e1a; --bg-secondary: #111827; --glass-bg: rgba(15,23,42,0.6); --glass-border: rgba(99,102,241,0.15);
    --text-primary: #f1f5f9; --text-secondary: #94a3b8; --text-muted: #64748b;
    --accent: #6366f1; --accent-2: #06b6d4; --accent-gradient: linear-gradient(135deg, #6366f1, #06b6d4);
    --good: #10b981; --good-bg: rgba(16,185,129,0.15); --medium: #f59e0b; --medium-bg: rgba(245,158,11,0.15); --critical: #ef4444; --critical-bg: rgba(239,68,68,0.15);
    --border: rgba(148,163,184,0.1); --radius: 16px; --radius-sm: 10px; --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.hidden{display:none!important}

/* Top Bar */
.top-bar{display:flex;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--border);margin-bottom:2rem}
.top-bar-left,.top-bar-right{display:flex;align-items:center;gap:12px}
.back-btn{display:inline-flex;align-items:center;gap:8px;color:var(--text-secondary);text-decoration:none;font-weight:500;font-size:14px;padding:8px 16px;border-radius:var(--radius-sm);transition:var(--transition)}
.back-btn:hover{color:var(--text-primary);background:rgba(99,102,241,0.08)}
.brand-chip{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--text-primary);background:rgba(99,102,241,0.08);padding:6px 14px;border-radius:20px;border:1px solid var(--glass-border)}
.brand-dot{width:8px;height:8px;background:var(--accent-gradient);border-radius:50%;display:inline-block}
.lang-switcher{display:flex;gap:4px}
.lang-btn{padding:6px 12px;font-size:12px;font-weight:600;color:var(--text-muted);text-decoration:none;border-radius:8px;border:1px solid transparent;transition:var(--transition)}
.lang-btn:hover{color:var(--text-primary);background:rgba(99,102,241,0.08)}
.lang-btn.active{color:#fff;background:var(--accent-gradient)}

/* Hero */
.hero{text-align:center;padding:2rem 0 3rem}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:rgba(99,102,241,0.1);border:1px solid var(--glass-border);border-radius:20px;font-size:12px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.5px;margin-bottom:1.5rem}
.hero-badge-dot{width:6px;height:6px;background:var(--good);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.5)}}
.hero h1{font-size:clamp(2rem,5vw,3rem);font-weight:800;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:1rem;line-height:1.2}
.hero-subtitle{font-size:1.05rem;color:var(--text-secondary);max-width:650px;margin:0 auto;line-height:1.7}

/* Pills */
.feature-pills{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin-top:2.5rem}
.pill{display:flex;align-items:flex-start;gap:12px;padding:16px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-sm);transition:var(--transition);text-align:left}
[dir="rtl"] .pill{text-align:right}
.pill:hover{border-color:rgba(99,102,241,0.3);transform:translateY(-2px)}
.pill-icon{font-size:1.5rem;flex-shrink:0}
.pill-text strong{display:block;font-size:.85rem;color:var(--text-primary);margin-bottom:4px}
.pill-text span{font-size:.78rem;color:var(--text-muted);line-height:1.5}

/* Card */
.glass-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius);backdrop-filter:blur(20px)}
.card{padding:2rem;margin-bottom:2rem}
.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem}
.card-title{display:flex;align-items:center;gap:8px;font-size:1.1rem;font-weight:700}
.card-title .icon{font-size:1.2rem}
.card-title-badge{font-size:10px;font-weight:800;padding:3px 10px;background:linear-gradient(135deg,#10b981,#06b6d4);color:#fff;border-radius:20px;letter-spacing:1px}

/* Form */
.form-group{display:flex;flex-direction:column;gap:8px;margin-bottom:1rem}
.form-label{font-size:.85rem;font-weight:600;color:var(--text-secondary);display:flex;align-items:center;gap:6px}
.label-icon{font-size:1rem}
.input-wrapper{display:flex;align-items:center;background:var(--bg-secondary);border:2px solid var(--border);border-radius:var(--radius-sm);transition:var(--transition)}
.input-wrapper:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px rgba(99,102,241,0.1)}
.input-prefix{padding:0 0 0 14px;color:var(--text-muted);font-size:.85rem;font-weight:500;white-space:nowrap;user-select:none}
[dir="rtl"] .input-prefix{padding:0 14px 0 0}
.form-input{flex:1;background:none;border:none;outline:none;color:var(--text-primary);font-size:.95rem;padding:12px 14px;font-family:inherit}
.form-input::placeholder{color:var(--text-muted)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:none;border-radius:var(--radius-sm);font-weight:700;font-size:1rem;cursor:pointer;transition:var(--transition);font-family:inherit}
.btn-primary{background:var(--accent-gradient);color:#fff}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.1)}
.btn-full{width:100%}
.btn-glow{position:relative;overflow:hidden}
.btn-glow::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);animation:shimmer 3s infinite}
@keyframes shimmer{100%{left:100%}}
.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}
.btn:disabled::before{animation:none}
.btn-icon{font-size:1.1rem}
.btn-sm{padding:8px 16px;font-size:.85rem;font-weight:600}
.btn-outline{background:transparent;color:var(--text-secondary);border:1px solid var(--border)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent);background:rgba(99,102,241,0.05)}

/* Loading */
.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(10,14,26,.95);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .3s}
.loading-card{text-align:center;padding:48px 64px;max-width:420px;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius)}
.loading-spinner{position:relative;width:80px;height:80px;margin:0 auto 24px}
.spinner-ring{position:absolute;border:3px solid transparent;border-radius:50%;animation:spin 1.5s linear infinite}
.spinner-ring:nth-child(1){width:80px;height:80px;border-top-color:#6366f1}
.spinner-ring:nth-child(2){width:60px;height:60px;top:10px;left:10px;border-top-color:#06b6d4;animation-duration:1s;animation-direction:reverse}
.spinner-ring:nth-child(3){width:40px;height:40px;top:20px;left:20px;border-top-color:#8b5cf6;animation-duration:.8s}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-title{font-size:1.2rem;font-weight:700;margin-bottom:8px}
.loading-status{color:var(--text-muted);font-size:.9rem;margin-bottom:20px}
.progress-bar{width:100%;height:4px;background:rgba(255,255,255,.1);border-radius:2px;overflow:hidden}
.progress-fill{width:0%;height:100%;background:var(--accent-gradient);border-radius:2px;transition:width .5s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* Results */
.results-wrap{animation:fadeSlideUp .5s ease}
@keyframes fadeSlideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.results-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;flex-wrap:wrap;gap:12px}
.results-header h2{font-size:1.3rem;font-weight:700;display:flex;align-items:center;gap:8px}
.export-btns{display:flex;gap:8px}

/* Score Ring */
.score-ring-wrap{text-align:center;margin-bottom:2rem}
.score-ring{position:relative;width:130px;height:130px;margin:0 auto 12px}
.score-ring svg{transform:rotate(-90deg);width:130px;height:130px}
.score-ring-bg{fill:none;stroke:rgba(255,255,255,.08);stroke-width:8}
.score-ring-fg{fill:none;stroke-width:8;stroke-linecap:round;stroke-dasharray:339.29;stroke-dashoffset:339.29;transition:stroke-dashoffset 1.5s ease-out}
.score-num{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:2rem;font-weight:800}
.score-label{font-size:.85rem;color:var(--text-secondary);font-weight:600}

/* Summary Grid */
.summary-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:2rem}
.summary-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-sm);padding:1.25rem;text-align:center;transition:var(--transition)}
.summary-card:hover{border-color:rgba(99,102,241,.3);transform:translateY(-2px)}
.summary-card .num{font-size:1.5rem;font-weight:800;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.summary-card .lbl{font-size:.8rem;color:var(--text-muted);margin-top:4px}

/* Tag List */
.tag-list{margin-bottom:2rem}
.tag-item{display:flex;align-items:center;gap:12px;padding:10px 14px;border-bottom:1px solid var(--border);font-size:.88rem}
.tag-item:last-child{border-bottom:none}
.tag-status{font-size:1.1rem;flex-shrink:0}
.tag-code{font-weight:700;color:var(--text-primary);min-width:80px}
.tag-href{color:var(--text-muted);word-break:break-all;font-size:.82rem}
.tag-msg{color:var(--critical);font-size:.82rem}

/* Section Cards */
.section-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius);padding:1.5rem;margin-bottom:1rem;transition:var(--transition)}
.section-card:hover{border-color:rgba(99,102,241,.3)}
.section-card h3{font-size:.95rem;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:8px}
.fix-list{list-style:none;padding:0}
.fix-list li{padding:8px 0;border-bottom:1px solid var(--border);font-size:.88rem;color:var(--text-secondary);display:flex;align-items:flex-start;gap:8px}
.fix-list li:last-child{border-bottom:none}
.fix-list .fix-icon{flex-shrink:0;font-size:1rem}

.rec-note{padding:14px 18px;background:rgba(16,185,129,.06);border-left:3px solid var(--good);border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:.88rem;color:var(--text-secondary);line-height:1.7;margin-top:1rem}
[dir="rtl"] .rec-note{border-left:none;border-right:3px solid var(--good);border-radius:var(--radius-sm) 0 0 var(--radius-sm)}

/* FAQ */
.faq-section{margin-top:4rem;padding-top:2rem;border-top:1px solid var(--border)}
.section-title{font-size:1.3rem;font-weight:700;margin-bottom:1.5rem}
.faq-item{margin-bottom:.75rem}
.faq-item details{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-sm);overflow:hidden}
.faq-item summary{padding:14px 18px;font-weight:600;font-size:.95rem;cursor:pointer;color:var(--text-primary);list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::before{content:'+';margin-right:10px;font-weight:700;color:var(--accent)}
[dir="rtl"] .faq-item summary::before{margin-right:0;margin-left:10px}
.faq-item details[open] summary::before{content:'−'}
.faq-item summary:hover{background:rgba(99,102,241,.05)}
.faq-item div{padding:0 18px 14px;font-size:.9rem;color:var(--text-secondary);line-height:1.7}

/* Footer */
.unified-footer{margin-top:4rem;padding:2rem 0;border-top:1px solid var(--border);text-align:center}
.footer-content{color:var(--text-muted);font-size:.85rem}
.footer-logo{display:inline-flex;align-items:center;gap:8px;font-size:1rem;font-weight:700;color:var(--text-primary);margin-bottom:8px}
.footer-logo span{font-size:.65rem;padding:2px 8px;background:var(--accent-gradient);color:#fff;border-radius:4px;font-weight:800}

/* Toast */
.toast-container{position:fixed;bottom:24px;right:24px;z-index:9999;display:flex;flex-direction:column;gap:8px}
[dir="rtl"] .toast-container{right:auto;left:24px}
.toast{padding:12px 20px;border-radius:var(--radius-sm);font-size:.85rem;font-weight:600;animation:slideT .3s;max-width:350px}
.toast-success{background:var(--good-bg);color:var(--good);border:1px solid var(--good)}
.toast-error{background:var(--critical-bg);color:var(--critical);border:1px solid var(--critical)}
@keyframes slideT{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* How It Works */
.how-section{margin-top:3rem;padding-top:2rem;border-top:1px solid var(--border)}
.how-content{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius);padding:1.5rem 2rem}
.how-content p{font-size:.92rem;color:var(--text-secondary);line-height:1.8;margin-bottom:1rem}
.how-content p:last-child{margin-bottom:0}

/* Related Tools */
.related-section{margin-top:3rem}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.related-card{display:flex;flex-direction:column;gap:6px;padding:1.25rem;background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-sm);text-decoration:none;transition:var(--transition)}
.related-card:hover{border-color:rgba(99,102,241,.3);transform:translateY(-3px)}
.related-icon{font-size:1.5rem}
.related-card strong{font-size:.9rem;color:var(--text-primary)}
.related-card span{font-size:.78rem;color:var(--text-muted);line-height:1.5}

@media(max-width:768px){.summary-grid{grid-template-columns:1fr}.feature-pills{grid-template-columns:1fr}.hidden-mobile{display:none!important}.hero h1{font-size:1.8rem}.card{padding:1.25rem}.loading-card{padding:32px}.results-header{flex-direction:column;align-items:flex-start}}