/* ================================================
   DiskWala Video Downloader — Main Stylesheet
   Fast, lightweight, mobile-first design
   ================================================ */

/* === CSS RESET & BASE === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#6c5ce7;
  --primary-dark:#5a4bd1;
  --primary-light:#a29bfe;
  --accent:#00cec9;
  --accent-dark:#00b5b0;
  --bg-dark:#0a0a1a;
  --bg-card:#12122a;
  --bg-card-hover:#1a1a3e;
  --text-primary:#f0f0ff;
  --text-secondary:#9d9dbd;
  --text-muted:#6c6c8a;
  --success:#00b894;
  --error:#ff6b6b;
  --warning:#fdcb6e;
  --border:#2d2d5e;
  --shadow:0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:0 8px 40px rgba(108,92,231,0.15);
  --radius:12px;
  --radius-sm:8px;
  --radius-lg:16px;
  --transition:0.3s cubic-bezier(0.4,0,0.2,1);
  --font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;
}
html{font-size:16px;scroll-behavior:smooth}
body{
  font-family:var(--font-family);
  background:var(--bg-dark);
  color:var(--text-primary);
  line-height:1.6;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:var(--primary-light);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto}

/* === BACKGROUND EFFECT === */
body::before{
  content:'';
  position:fixed;
  top:-50%;left:-50%;
  width:200%;height:200%;
  background:radial-gradient(ellipse at 30% 20%,rgba(108,92,231,0.08) 0%,transparent 50%),
             radial-gradient(ellipse at 70% 80%,rgba(0,206,201,0.05) 0%,transparent 50%);
  z-index:-1;
  pointer-events:none;
}

/* === HEADER === */
.header{
  background:rgba(10,10,26,0.95);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:100;
  padding:0 1rem;
}
.header-inner{
  max-width:1100px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:60px;
}
.logo{
  display:flex;align-items:center;gap:10px;
  font-size:1.2rem;font-weight:700;color:var(--text-primary);
}
.logo-icon{
  width:36px;height:36px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;
  font-size:1.1rem;
}
.nav{display:flex;gap:1.5rem;align-items:center}
.nav a{color:var(--text-secondary);font-size:0.9rem;font-weight:500;transition:color var(--transition)}
.nav a:hover{color:var(--text-primary)}
.nav-toggle{display:none;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer}

/* === MOBILE NAV === */
@media(max-width:768px){
  .nav{
    display:none;
    position:absolute;top:60px;left:0;right:0;
    background:var(--bg-card);
    flex-direction:column;
    padding:1rem;gap:0;
    border-bottom:1px solid var(--border);
  }
  .nav.active{display:flex}
  .nav a{padding:0.75rem 0;border-bottom:1px solid var(--border);width:100%}
  .nav a:last-child{border-bottom:none}
  .nav-toggle{display:block}
}

/* === HERO / TOOL SECTION === */
.hero{
  padding:3rem 1rem 2rem;
  text-align:center;
  max-width:750px;
  margin:0 auto;
}
.hero h1{
  font-size:clamp(1.6rem,4vw,2.4rem);
  font-weight:800;
  margin-bottom:0.5rem;
  background:linear-gradient(135deg,var(--text-primary),var(--primary-light));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero .subtitle{
  color:var(--text-secondary);
  font-size:clamp(0.95rem,2vw,1.1rem);
  margin-bottom:2rem;
  max-width:550px;margin-left:auto;margin-right:auto;
}

/* === BENEFITS ROW === */
.benefits{
  display:flex;flex-wrap:wrap;justify-content:center;gap:0.75rem;
  margin-bottom:2rem;
}
.benefit-tag{
  display:inline-flex;align-items:center;gap:5px;
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:20px;
  padding:6px 14px;
  font-size:0.8rem;
  color:var(--text-secondary);
}
.benefit-tag span{font-size:1rem}

/* === TOOL CARD === */
.tool-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:2rem 1.5rem;
  max-width:650px;
  margin:0 auto 2rem;
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
}
.tool-card::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
}

/* === INPUT GROUP === */
.input-group{
  display:flex;gap:10px;
  margin-bottom:0.75rem;
}
.url-input{
  flex:1;
  background:var(--bg-dark);
  border:2px solid var(--border);
  border-radius:var(--radius);
  padding:14px 16px;
  color:var(--text-primary);
  font-size:1rem;
  transition:border-color var(--transition);
  outline:none;
}
.url-input:focus{border-color:var(--primary)}
.url-input::placeholder{color:var(--text-muted)}
.btn-search{
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;
  border:none;
  border-radius:var(--radius);
  padding:14px 28px;
  font-size:1rem;
  font-weight:600;
  cursor:pointer;
  transition:all var(--transition);
  white-space:nowrap;
}
.btn-search:hover{transform:translateY(-1px);box-shadow:0 4px 15px rgba(108,92,231,0.4)}
.btn-search:active{transform:translateY(0)}
.btn-search:disabled{opacity:0.6;cursor:not-allowed;transform:none}
.error-msg{
  color:var(--error);font-size:0.85rem;
  margin-top:0.5rem;display:none;
  text-align:left;
}
.error-msg.show{display:block}
.supported-text{
  color:var(--text-muted);font-size:0.78rem;
  margin-top:0.5rem;text-align:left;
}

@media(max-width:520px){
  .input-group{flex-direction:column}
  .btn-search{width:100%}
}

/* === PROCESSING ANIMATION === */
.processing-section{
  display:none;
  padding:1.5rem 0;
}
.processing-section.active{display:block}

.process-steps{
  text-align:left;
  margin-bottom:1.5rem;
}
.process-step{
  display:flex;align-items:center;gap:12px;
  padding:10px 0;
  opacity:0.3;
  transition:all 0.5s ease;
}
.process-step.active{opacity:1}
.process-step.done{opacity:0.7}
.process-step.done .step-icon{background:var(--success);color:#fff}
.step-icon{
  width:32px;height:32px;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:0.85rem;
  background:var(--bg-dark);
  border:2px solid var(--border);
  flex-shrink:0;
  transition:all 0.4s ease;
}
.step-icon.spinning{animation:spin 1s linear infinite;border-color:var(--primary);border-top-color:transparent}
.step-text{font-size:0.92rem;color:var(--text-secondary)}
.process-step.active .step-text{color:var(--text-primary);font-weight:500}

/* === PROGRESS BAR === */
.progress-wrap{
  background:var(--bg-dark);
  border-radius:20px;
  height:6px;
  overflow:hidden;
  margin-bottom:1.5rem;
}
.progress-bar{
  height:100%;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  border-radius:20px;
  width:0%;
  transition:width 0.4s ease;
}

/* === RESULT SECTION === */
.result-section{
  display:none;
  animation:fadeInUp 0.5s ease;
}
.result-section.active{display:block}

.file-details{
  background:var(--bg-dark);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.25rem;
  margin-bottom:1.5rem;
}
.file-detail-row{
  display:flex;justify-content:space-between;align-items:center;
  padding:8px 0;
  border-bottom:1px solid rgba(45,45,94,0.5);
}
.file-detail-row:last-child{border-bottom:none}
.detail-label{
  color:var(--text-muted);font-size:0.85rem;
  display:flex;align-items:center;gap:6px;
}
.detail-value{
  color:var(--text-primary);font-size:0.92rem;font-weight:600;
  text-align:right;max-width:60%;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

/* === GET VIDEO BUTTON === */
.btn-get-video{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  width:100%;
  padding:16px 32px;
  background:linear-gradient(135deg,var(--success),var(--accent-dark));
  color:#fff;
  border:none;
  border-radius:var(--radius);
  font-size:1.1rem;
  font-weight:700;
  cursor:pointer;
  transition:all var(--transition);
  position:relative;
  overflow:hidden;
}
.btn-get-video::after{
  content:'';
  position:absolute;
  top:-50%;left:-50%;width:200%;height:200%;
  background:linear-gradient(45deg,transparent,rgba(255,255,255,0.1),transparent);
  animation:shimmer 2s infinite;
}
.btn-get-video:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,184,148,0.4)}

/* === MOCK VIDEO PLAYER === */
.mock-player{
  background:linear-gradient(135deg,#1a1a2e,#16213e);
  border-radius:var(--radius);
  aspect-ratio:16/9;
  max-width:100%;
  display:flex;align-items:center;justify-content:center;
  position:relative;
  overflow:hidden;
  margin-bottom:1.5rem;
  border:1px solid var(--border);
}
.mock-player::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(circle at center,rgba(108,92,231,0.15) 0%,transparent 70%);
}
.play-btn-overlay{
  width:70px;height:70px;
  background:rgba(108,92,231,0.9);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:1.8rem;color:#fff;
  z-index:1;
  box-shadow:0 0 30px rgba(108,92,231,0.5);
  cursor:pointer;
  transition:all var(--transition);
}
.play-btn-overlay:hover{transform:scale(1.1);background:rgba(108,92,231,1)}
.mock-player .player-bar{
  position:absolute;bottom:0;left:0;right:0;
  background:rgba(0,0,0,0.7);
  padding:8px 12px;
  display:flex;align-items:center;gap:10px;
}
.player-bar .time{color:var(--text-muted);font-size:0.75rem}
.player-bar .seek{flex:1;height:3px;background:var(--border);border-radius:2px;position:relative}
.player-bar .seek::after{
  content:'';position:absolute;left:0;top:0;bottom:0;width:0%;
  background:var(--primary);border-radius:2px;
}
.player-bar .controls{display:flex;gap:8px;color:var(--text-muted);font-size:0.85rem}

/* === DOWNLOAD PAGE === */
.download-container{
  max-width:750px;
  margin:0 auto;
  padding:2rem 1rem;
}
.download-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:2rem 1.5rem;
  box-shadow:var(--shadow);
}
.btn-download{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  width:100%;
  padding:18px 32px;
  background:linear-gradient(135deg,#e74c3c,#c0392b);
  color:#fff;
  border:none;
  border-radius:var(--radius);
  font-size:1.15rem;
  font-weight:700;
  cursor:pointer;
  transition:all var(--transition);
  text-decoration:none;
  position:relative;
  overflow:hidden;
}
.btn-download::after{
  content:'';
  position:absolute;
  top:-50%;left:-50%;width:200%;height:200%;
  background:linear-gradient(45deg,transparent,rgba(255,255,255,0.1),transparent);
  animation:shimmer 2s infinite;
}
.btn-download:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(231,76,60,0.4);color:#fff}

.btn-alt{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  width:100%;
  padding:14px 24px;
  background:transparent;
  color:var(--primary-light);
  border:2px solid var(--border);
  border-radius:var(--radius);
  font-size:0.95rem;
  font-weight:600;
  cursor:pointer;
  transition:all var(--transition);
  text-decoration:none;
  margin-top:0.75rem;
}
.btn-alt:hover{border-color:var(--primary);background:rgba(108,92,231,0.1);color:var(--primary-light)}

/* === AD CONTAINERS === */
.ad-container{
  display:flex;justify-content:center;
  margin:1.5rem 0;
  min-height:50px;
}
.ad-container-sm{margin:1rem 0}

/* === CONTENT SECTIONS === */
.content-section{
  max-width:850px;
  margin:0 auto;
  padding:2rem 1rem 3rem;
}
.content-section h2{
  font-size:clamp(1.3rem,3vw,1.7rem);
  font-weight:700;
  margin-bottom:1rem;
  color:var(--text-primary);
}
.content-section h3{
  font-size:1.1rem;
  font-weight:600;
  margin:1.5rem 0 0.75rem;
  color:var(--text-primary);
}
.content-section p{
  color:var(--text-secondary);
  margin-bottom:1rem;
  line-height:1.7;
}
.content-section ul,.content-section ol{
  color:var(--text-secondary);
  margin:0 0 1rem 1.5rem;
}
.content-section li{margin-bottom:0.5rem;line-height:1.6}

/* === HOW-TO STEPS === */
.steps-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:1.25rem;
  margin:1.5rem 0;
}
.step-card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:1.5rem;
  text-align:center;
  transition:all var(--transition);
}
.step-card:hover{border-color:var(--primary);transform:translateY(-2px)}
.step-num{
  width:40px;height:40px;
  background:linear-gradient(135deg,var(--primary),var(--accent));
  border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-weight:700;font-size:1.1rem;
  margin-bottom:0.75rem;
}
.step-card h4{font-size:0.95rem;margin-bottom:0.5rem;color:var(--text-primary)}
.step-card p{font-size:0.85rem;color:var(--text-muted);margin:0}

/* === FAQ === */
.faq-item{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  margin-bottom:0.75rem;
  overflow:hidden;
}
.faq-q{
  padding:1rem 1.25rem;
  cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;
  font-weight:600;font-size:0.95rem;
  transition:background var(--transition);
}
.faq-q:hover{background:var(--bg-card-hover)}
.faq-q::after{content:'+';font-size:1.3rem;color:var(--primary-light);transition:transform var(--transition)}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height 0.4s ease,padding 0.4s ease;
}
.faq-item.open .faq-a{
  max-height:500px;
  padding:0 1.25rem 1rem;
}
.faq-a p{color:var(--text-secondary);font-size:0.9rem;margin:0}

/* === FOOTER === */
.footer{
  background:var(--bg-card);
  border-top:1px solid var(--border);
  padding:2rem 1rem;
  margin-top:3rem;
}
.footer-inner{
  max-width:1100px;
  margin:0 auto;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  align-items:center;
  gap:1rem;
}
.footer-links{display:flex;flex-wrap:wrap;gap:1.25rem}
.footer-links a{color:var(--text-muted);font-size:0.85rem}
.footer-links a:hover{color:var(--text-primary)}
.footer-copy{color:var(--text-muted);font-size:0.8rem}

/* === PAGE HEADER (for subpages) === */
.page-header{
  text-align:center;
  padding:3rem 1rem 2rem;
  max-width:750px;margin:0 auto;
}
.page-header h1{
  font-size:clamp(1.5rem,3.5vw,2rem);
  font-weight:800;
  margin-bottom:0.5rem;
}
.page-header p{color:var(--text-secondary)}
.page-content{
  max-width:750px;margin:0 auto;padding:0 1rem 3rem;
}
.page-content h2{font-size:1.3rem;font-weight:700;margin:2rem 0 0.75rem}
.page-content p{color:var(--text-secondary);line-height:1.7;margin-bottom:1rem}
.page-content ul{color:var(--text-secondary);margin:0 0 1rem 1.5rem}
.page-content li{margin-bottom:0.4rem}
.page-content a{color:var(--primary-light)}

/* === CONTACT FORM === */
.contact-form{max-width:500px;margin:0 auto}
.form-group{margin-bottom:1.25rem}
.form-group label{
  display:block;font-size:0.9rem;font-weight:500;
  margin-bottom:0.4rem;color:var(--text-secondary);
}
.form-group input,.form-group textarea,.form-group select{
  width:100%;
  background:var(--bg-dark);
  border:2px solid var(--border);
  border-radius:var(--radius-sm);
  padding:12px 14px;
  color:var(--text-primary);
  font-size:0.95rem;
  font-family:var(--font-family);
  outline:none;
  transition:border-color var(--transition);
}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--primary)}
.form-group textarea{resize:vertical;min-height:120px}
.btn-submit{
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));
  color:#fff;border:none;border-radius:var(--radius-sm);
  padding:12px 32px;font-size:1rem;font-weight:600;
  cursor:pointer;transition:all var(--transition);
}
.btn-submit:hover{transform:translateY(-1px);box-shadow:0 4px 15px rgba(108,92,231,0.4)}

/* === ANIMATIONS === */
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes shimmer{
  0%{transform:translateX(-100%) rotate(45deg)}
  100%{transform:translateX(100%) rotate(45deg)}
}
@keyframes fadeInUp{
  from{opacity:0;transform:translateY(15px)}
  to{opacity:1;transform:translateY(0)}
}
@keyframes pulse{
  0%,100%{transform:scale(1)}
  50%{transform:scale(1.05)}
}
@keyframes typing{
  0%{width:0}
  100%{width:100%}
}
@keyframes blink{
  0%,50%{opacity:1}
  51%,100%{opacity:0}
}

/* === BREADCRUMB === */
.breadcrumb{
  max-width:1100px;margin:0 auto;padding:0.75rem 1rem;
  font-size:0.8rem;color:var(--text-muted);
}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb span{margin:0 6px}

/* === SCHEMA HIDDEN === */
.sr-only{
  position:absolute;width:1px;height:1px;
  padding:0;margin:-1px;overflow:hidden;
  clip:rect(0,0,0,0);border:0;
}

/* === UTILS === */
.text-center{text-align:center}
.mt-1{margin-top:0.5rem}
.mt-2{margin-top:1rem}
.mt-3{margin-top:1.5rem}
.mb-1{margin-bottom:0.5rem}
.mb-2{margin-bottom:1rem}
.mb-3{margin-bottom:1.5rem}