/* =============================================================================
   FFMPEG STUDIO - SETUP GUIDE STYLES
   ============================================================================= */

@import url('../styles.css'); /* Import Parent Studio Variables & Base */

/* ========================================= */
/* === GUIDE SPECIFIC LAYOUT === */
/* ========================================= */

.guide-section {
  display: none;
  animation: fadeIn 0.5s ease;
}

.guide-section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Ad Placeholder */
.ad-placeholder-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 90px;
}
.ad-placeholder-box {
    background: var(--card);
    border: 1px dashed var(--border);
    border-radius: 12px;
    width: 100%;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--muted);
    font-size: 0.8rem;
    opacity: 0.5;
}

/* ========================================= */
/* === CHROMATIC FOCUS STACK NAVIGATION === */
/* ========================================= */

.col-violet { --item-color: #8b5cf6; }
.col-blue { --item-color: #3b82f6; }
.col-cyan { --item-color: #06b6d4; }
.col-rose { --item-color: #f43f5e; }
.col-green { --item-color: #10b981; }

.nav-chromatic-stack {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    z-index: 100;
    padding: 10px;
}

.zoom-item {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    text-decoration: none;
    color: var(--item-color); 
}

.zoom-item svg {
    width: 18px;
    height: 18px;
    opacity: 0.6; 
    transition: all 0.3s;
}

.label-tip {
    position: absolute;
    right: 50px;
    background: var(--fg);
    color: var(--bg);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease;
}

.nav-chromatic-stack:hover .zoom-item {
    margin: 4px 0; 
    transform: scale(1.1);
    background: var(--card);
    border-color: var(--border);
}

.zoom-item:hover {
    transform: scale(1.5) translateX(-15px) !important;
    background: var(--item-color) !important; 
    border-color: var(--item-color) !important;
    box-shadow: 0 0 25px color-mix(in srgb, var(--item-color) 50%, transparent);
    z-index: 10;
}

.zoom-item:hover svg {
    color: white !important; 
    opacity: 1;
    filter: drop-shadow(0 0 5px rgba(255,255,255,0.5));
}

.zoom-item:hover .label-tip { opacity: 1; }

.zoom-item.active {
    background: var(--item-color);
    border-color: var(--item-color);
    color: white;
    box-shadow: 0 0 15px color-mix(in srgb, var(--item-color) 40%, transparent);
}
.zoom-item.active svg { opacity: 1; color: white; }

@media (max-width: 768px) {
    .nav-chromatic-stack { display: none; }
}

/* ========================================= */
/* === OS SELECTION CARDS === */
/* ========================================= */

.os-tabs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.os-tab-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  color: var(--fg-muted);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  overflow: hidden;
  z-index: 1;
}

.os-tab-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, var(--os-color, var(--accent)) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}

/* Shine Effect */
.os-tab-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.6s ease;
    z-index: 2;
}

.os-tab-card:hover::after {
    left: 100%;
}

.os-tab-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.5);
}

.os-tab-card:hover::before { opacity: 0.08; }

.os-tab-card.active {
  border-color: var(--os-color, var(--accent));
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
}

.os-tab-card.active::before { opacity: 0.15; }

.os-card-indicator {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 8px;
  height: 8px;
  background: var(--fg-muted);
  border-radius: 50%;
  transition: all 0.3s ease;
  opacity: 0.3;
}

.os-tab-card.active .os-card-indicator {
  background: var(--os-color, var(--accent));
  opacity: 1;
  box-shadow: 0 0 10px var(--os-color, var(--accent));
}

.os-tab-card svg {
  width: 32px;
  height: 32px;
  opacity: 0.6;
  transition: all 0.3s ease;
  position: relative;
  z-index: 3;
}

.os-tab-card:hover svg, .os-tab-card.active svg {
  opacity: 1;
  color: var(--os-color, var(--accent));
  filter: drop-shadow(0 0 8px var(--os-color, var(--accent)));
}

.os-tab-card span {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  position: relative;
  z-index: 3;
}

.os-tab-card.active span { color: var(--fg); }

/* OS Colors */
.os-tab-card[data-os="windows"] { --os-color: #0078D4; }
.os-tab-card[data-os="macos"] { --os-color: #A2AAAD; }
.os-tab-card[data-os="linux"] { --os-color: #FCC624; }

/* ========================================= */
/* === REQUIREMENTS GRID === */
/* ========================================= */

.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.req-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: all 0.3s ease;
}

.req-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.req-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.req-info { display: flex; flex-direction: column; gap: 0.25rem; }
.req-label { font-size: 0.7rem; color: var(--fg-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.req-value { font-size: 0.95rem; font-weight: 600; color: var(--fg); }

/* ========================================= */
/* === SPLIT LAYOUT & WINDOWS === */
/* ========================================= */

.split-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
}

@media (max-width: 1024px) {
  .split-layout { grid-template-columns: 1fr; }
}

.video-column { position: relative; }
.video-caption {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-align: center;
}

.studio-window {
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--card);
  position: sticky;
  top: 100px;
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.5);
}

.window-header {
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
  min-height: 40px;
}

.window-header .title {
  font-size: 0.75rem;
  color: var(--fg-muted);
  font-family: 'JetBrains Mono', monospace;
  flex: 1;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Windows Header */
.window-header.win-header {
  background: #000;
  justify-content: space-between;
  padding: 0;
  height: 32px;
}

.win-controls { display: flex; height: 100%; margin-left: auto; }
.win-btn { width: 46px; height: 100%; display: flex; align-items: center; justify-content: center; position: relative; }
.win-btn.close::after, .win-btn.close::before { content: ''; position: absolute; background: #fff; width: 12px; height: 1px; top: 50%; left: 50%; }
.win-btn.close::after { transform: translate(-50%, -50%) rotate(45deg); }
.win-btn.close::before { transform: translate(-50%, -50%) rotate(-45deg); }
.win-btn.close:hover { background: #E81123; }

/* macOS Header */
.mac-controls { display: flex; gap: 8px; margin-right: 1rem; }
.mac-header .dot { width: 12px; height: 12px; border-radius: 50%; }
.dot.red { background: #FF5F56; }
.dot.yellow { background: #FFBD2E; }
.dot.green { background: #27C93F; }

/* Linux Header */
.window-header.linux-header { background: #2C001E; justify-content: center; position: relative; }
.linux-controls { position: absolute; right: 0.75rem; }
.lin-btn.close::after { content: '×'; color: #fff; font-size: 16px; }

.window-body {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  background: #000;
}

.window-body iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* ========================================= */
/* === STEPS & TERMINAL === */
/* ========================================= */

.steps-wrapper {
  display: flex;
  flex-direction: column;
}

.steps-column { 
  position: relative;
  padding-left: 1rem; 
}

/* Timeline Line */
.steps-column::before {
  content: '';
  position: absolute;
  left: 32px;
  top: 16px;
  height: calc(100% - 32px);
  width: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--border) 80%, transparent 100%);
  opacity: 0.3;
  z-index: 0;
}

.step-block {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
  color: var(--accent);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.step-content {
  flex: 1;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid transparent;
  padding: 1rem;
  border-radius: 12px;
  transition: all 0.3s ease;
}

/* Step Hover Glow */
.step-block:hover .step-content {
  border-color: var(--border);
  box-shadow: 0 0 20px rgba(0, 212, 170, 0.05);
  background: rgba(255, 255, 255, 0.03);
}

.step-block:hover .step-number {
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 0 15px rgba(0, 212, 170, 0.4);
}

.step-content h4 { font-size: 1.1rem; margin-bottom: 0.5rem; color: var(--fg); }
.step-content p { font-size: 0.9rem; color: var(--fg-muted); line-height: 1.6; margin-bottom: 0.75rem; }

/* Terminal Code */
.terminal-code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--accent);
}

.terminal-code span {
  flex: 1;
  overflow-x: auto;
  white-space: nowrap;
}

.copy-btn {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 0.25rem 0.75rem;
  border-radius: 6px;
  color: var(--fg-muted);
  font-size: 0.7rem;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.copy-btn:hover { background: var(--accent); color: var(--bg); border-color: var(--accent); }

/* Distro Tabs */
.distro-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}

.distro-tab {
  background: transparent;
  border: none;
  color: var(--fg-muted);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  position: relative;
}

.distro-tab.active { color: var(--accent); }
.distro-tab.active::after {
  content: '';
  position: absolute;
  bottom: -0.55rem;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
}

.distro-content { display: block; }
.distro-content.hidden { display: none; }

code {
  background: var(--bg-secondary);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8em;
  color: var(--accent-warm);
}

/* ========================================= */
/* === ANIMATED GUIDE BUTTONS === */
/* ========================================= */

.guide-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.guide-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  overflow: hidden; 
  transition: all 0.3s ease;
  z-index: 1;
}

.guide-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  position: relative;
  z-index: 2;
}

.guide-btn span {
    position: relative;
    z-index: 2;
}

.guide-btn-primary {
  background: var(--accent);
  color: var(--bg);
  border: 1px solid var(--accent);
  box-shadow: 0 4px 15px rgba(0, 212, 170, 0.2);
}
.guide-btn-primary:hover {
  box-shadow: 0 6px 20px rgba(0, 212, 170, 0.4);
  transform: translateY(-2px);
}

.guide-btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border);
}
.guide-btn-outline:hover {
  border-color: var(--accent);
  background: rgba(0, 212, 170, 0.05);
}

.guide-btn:hover svg { transform: translateY(-2px); }

/* Shine Animation */
.guide-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s ease;
  z-index: 1;
}
.guide-btn:hover::before { left: 100%; }