/*
 * =============================================
 *   StarmoAI 首页专属样式
 *   版本: v1.0 | 日期: 2026.07.23
 * =============================================
 *
 * 仅首页使用的样式，其他页面禁止引入本文件。
 * 所有数值均引用全局 CSS 变量，禁止硬编码。
 */

/* ===== 页面基础 ===== */
.sm-home {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--sm-color-bg-base);
  cursor: crosshair;
}

/* ===== 星云背景层 ===== */
.sm-nebula-layer {
  position: fixed;
  inset: 0;
  z-index: var(--sm-z-base);
  overflow: hidden;
  pointer-events: none;
}

.sm-nebula {
  position: absolute;
  border-radius: var(--sm-radius-full);
  filter: blur(var(--sm-home-nebula-blur));
  opacity: 0;
  animation: nebulaFade var(--sm-home-nebula-fade-duration) var(--sm-ease-out) forwards;
}

/* ===== Canvas 星空层 ===== */
.sm-starfield {
  position: fixed;
  inset: 0;
  z-index: var(--sm-z-canvas);
}

/* ===== 鼠标光晕 ===== */
.sm-cursor-glow {
  position: fixed;
  width: var(--sm-home-cursor-glow-size);
  height: var(--sm-home-cursor-glow-size);
  border-radius: var(--sm-radius-full);
  background: radial-gradient(circle, rgba(139, 92, 246, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: var(--sm-z-cursor);
  transform: translate(-50%, -50%);
  transition: opacity var(--sm-duration-fast) var(--sm-ease-out);
}

/* ===== 内容层 ===== */
.sm-content-layer {
  position: fixed;
  inset: 0;
  z-index: var(--sm-z-content);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

/* ===== 品牌展示 ===== */
.sm-brand-container {
  text-align: center;
  animation: brandReveal var(--sm-home-brand-reveal-duration) var(--sm-ease-out) var(--sm-home-brand-reveal-delay) both;
}

@keyframes brandReveal {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    filter: blur(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

/* --- 副标题 --- */
.sm-brand-subtitle {
  font-family: var(--sm-font-family);
  font-weight: var(--sm-display-weight);
  letter-spacing: 0.5em;
  font-size: var(--sm-fs-body-lg);
  color: var(--sm-color-text-secondary);
  text-transform: uppercase;
  margin-bottom: var(--sm-space-4);
  animation: subtleGlow 4s var(--sm-ease-in-out) infinite alternate;
}

/* --- 主标题 --- */
.sm-brand-title {
  font-family: var(--sm-font-family);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: var(--sm-fs-hero);
  line-height: var(--sm-display-line-height);
  color: transparent;
  background: linear-gradient(
    135deg,
    var(--sm-color-brand-light) 0%,
    var(--sm-color-brand-primary) 25%,
    var(--sm-color-brand-secondary) 50%,
    var(--sm-color-brand-accent) 75%,
    var(--sm-color-brand-light) 100%
  );
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  animation: gradientShift var(--sm-home-gradient-shift-duration) var(--sm-ease-in-out) infinite;
  position: relative;
  transform: skewX(-0.2deg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* 悬停：字间距微扩 + 光晕增强 */
  transition: letter-spacing var(--sm-duration-slow) var(--sm-ease-out), filter var(--sm-duration-slow) var(--sm-ease-out);
  cursor: default;
}

.sm-brand-title::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  color: transparent;
  background: linear-gradient(
    135deg,
    var(--sm-color-brand-light) 0%,
    var(--sm-color-brand-primary) 25%,
    var(--sm-color-brand-secondary) 50%,
    var(--sm-color-brand-accent) 75%,
    var(--sm-color-brand-light) 100%
  );
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  animation: gradientShift var(--sm-home-gradient-shift-duration) var(--sm-ease-in-out) infinite;
  filter: blur(20px);
  opacity: 0.5;
  z-index: -1;
}

/* 悬停触发：标题发光扩散 */
.sm-brand-title:hover {
  letter-spacing: 0.14em;
  filter: drop-shadow(0 0 20px rgba(167, 139, 250, 0.5));
}

.sm-brand-title:hover::after {
  filter: blur(30px);
  opacity: 0.8;
}

/* --- 分割线 --- */
.sm-brand-divider {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--sm-color-text-secondary), transparent);
  margin: var(--sm-space-6) auto;
  animation: lineExpand 2s var(--sm-ease-out) 3s both;
}

@keyframes lineExpand {
  from { width: 0; opacity: 0; }
  to { width: 60px; opacity: 1; }
}

/* --- 标语 --- */
.sm-brand-tagline {
  font-family: var(--sm-font-family);
  font-weight: var(--sm-body-weight);
  letter-spacing: var(--sm-body-spacing);
  font-size: var(--sm-fs-body);
  line-height: var(--sm-body-line-height);
  color: var(--sm-color-text-muted);
  animation: subtleGlow 4s var(--sm-ease-in-out) infinite alternate-reverse;
}

/* ===== 底部提示 ===== */
.sm-scroll-hint {
  position: fixed;
  bottom: var(--sm-space-10);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--sm-z-content);
  color: var(--sm-color-text-ghost);
  font-family: var(--sm-font-family);
  font-weight: var(--sm-caption-weight);
  letter-spacing: var(--sm-caption-spacing);
  font-size: var(--sm-fs-caption);
  animation:
    float var(--sm-home-hint-float-duration) var(--sm-ease-in-out) infinite,
    fadeIn var(--sm-home-hint-float-duration) var(--sm-ease-out) var(--sm-home-hint-fade-delay) both;
  pointer-events: none;
}

/* ===== 全局动画关键帧 ===== */
@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes subtleGlow {
  from { opacity: 0.5; }
  to { opacity: 0.8; }
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-8px); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes nebulaFade {
  to { opacity: 1; }
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .sm-brand-subtitle {
    letter-spacing: 6px;
    font-size: var(--sm-fs-body-sm);
  }
  .sm-brand-tagline {
    letter-spacing: 3px;
  }
}

/* ===== 观测模式切换器 ===== */
.sm-mode-switcher {
  position: fixed;
  bottom: var(--sm-space-5);
  left: var(--sm-space-5);
  z-index: var(--sm-z-panel);
  background: rgba(15, 10, 30, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--sm-radius-md);
  padding: var(--sm-space-2) var(--sm-space-3);
  display: flex;
  align-items: center;
  gap: var(--sm-space-1);
  font-size: var(--sm-fs-caption);
  color: rgba(196, 181, 253, 0.7);
}

.sm-mode-label {
  color: rgba(148, 163, 184, 0.5);
  text-transform: uppercase;
  letter-spacing: var(--sm-caption-spacing);
  margin-right: var(--sm-space-1);
  font-weight: var(--sm-caption-weight);
}

.sm-mode-btn {
  padding: 3px 8px;
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: var(--sm-radius-sm);
  color: rgba(226, 232, 240, 0.7);
  cursor: pointer;
  font-size: var(--sm-fs-micro);
  letter-spacing: 0.05em;
  transition: all var(--sm-duration-fast) var(--sm-ease-out);
  font-family: var(--sm-font-family);
}

.sm-mode-btn:hover {
  background: rgba(139, 92, 246, 0.3);
  color: var(--sm-color-neutral-0);
  border-color: rgba(139, 92, 246, 0.5);
}

.sm-mode-btn.active {
  background: rgba(139, 92, 246, 0.4);
  color: var(--sm-color-neutral-0);
}

.sm-mode-btn.active[data-mode="ground"] {
  background: rgba(245, 158, 11, 0.3);
  border-color: rgba(245, 158, 11, 0.5);
  color: #fef3c7;
}

.sm-mode-btn.active[data-mode="deep-space"] {
  background: rgba(124, 58, 237, 0.4);
  border-color: rgba(124, 58, 237, 0.6);
  color: #c4b5fd;
}

/* ===== 观测模式切换浮层 ===== */
.sm-mode-desc {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: var(--sm-z-overlay);
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.6s var(--sm-ease-out);
}

.sm-mode-desc.show {
  opacity: 1;
}

.sm-mode-desc-title {
  font-family: var(--sm-font-family);
  font-weight: var(--sm-display-weight);
  letter-spacing: var(--sm-display-spacing);
  font-size: var(--sm-fs-display);
  margin-bottom: var(--sm-space-2);
}

.sm-mode-desc-sub {
  font-family: var(--sm-font-family);
  font-weight: var(--sm-caption-weight);
  letter-spacing: var(--sm-caption-spacing);
  font-size: var(--sm-fs-body-sm);
  color: rgba(196, 181, 253, 0.5);
}

.sm-mode-desc.ground .sm-mode-desc-title {
  background: linear-gradient(135deg, #fbbf24, #f59e0b, #d97706);
  -webkit-background-clip: text; background-clip: text;
  color: transparent; -webkit-text-fill-color: transparent;
}

.sm-mode-desc.deep-space .sm-mode-desc-title {
  background: linear-gradient(135deg, #c4b5fd, #8b5cf6, #6366f1);
  -webkit-background-clip: text; background-clip: text;
  color: transparent; -webkit-text-fill-color: transparent;
}

.sm-mode-desc.natural .sm-mode-desc-title {
  background: linear-gradient(135deg, #c4b5fd, #a78bfa, #818cf8);
  -webkit-background-clip: text; background-clip: text;
  color: transparent; -webkit-text-fill-color: transparent;
}

/* ===== 定位状态徽章（左上角） ===== */
.sm-geo-badge {
  position: fixed;
  top: var(--sm-space-5);
  left: var(--sm-space-5);
  z-index: var(--sm-z-panel);
  background: rgba(15, 10, 30, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--sm-radius-full);
  padding: var(--sm-space-2) var(--sm-space-3);
  font-size: var(--sm-fs-caption);
  color: rgba(196, 181, 253, 0.7);
  display: flex;
  align-items: center;
  gap: var(--sm-space-2);
}

.sm-geo-dot {
  width: 6px; height: 6px;
  border-radius: var(--sm-radius-full);
  background: #22d3ee;
  box-shadow: 0 0 8px #22d3ee;
  animation: smPulse 2s var(--sm-ease-in-out) infinite;
}

@keyframes smPulse {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

/* ===== 信息面板（右上角） ===== */
.sm-info-panel {
  position: fixed;
  top: var(--sm-space-5);
  right: var(--sm-space-5);
  z-index: var(--sm-z-panel);
  background: rgba(10, 8, 22, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(139, 92, 246, 0.12);
  border-radius: var(--sm-radius-md);
  padding: 0;
  font-size: var(--sm-fs-caption);
  color: rgba(196, 181, 253, 0.8);
  line-height: 1.8;
  min-width: 180px;
  transition: background 0.3s var(--sm-ease-out), border-color 0.3s var(--sm-ease-out);
  overflow: hidden;
}

.sm-info-panel.expanded {
  background: rgba(15, 10, 30, 0.45);
  border-color: rgba(139, 92, 246, 0.3);
}

.sm-info-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  padding: var(--sm-space-3) var(--sm-space-4);
  user-select: none;
}

.sm-info-title {
  font-size: var(--sm-fs-micro);
  letter-spacing: 0.25em;
  color: rgba(167, 139, 250, 0.9);
  text-transform: uppercase;
  font-weight: 600;
}

.sm-info-toggle {
  width: 16px; height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s var(--sm-ease-out);
}

.sm-info-panel.expanded .sm-info-toggle {
  transform: rotate(180deg);
}

.sm-info-toggle svg {
  width: 10px; height: 10px;
  fill: rgba(167, 139, 250, 0.6);
}

.sm-info-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s var(--sm-ease-out), padding 0.3s var(--sm-ease-out);
  padding: 0 var(--sm-space-4);
}

.sm-info-panel.expanded .sm-info-body {
  max-height: 400px;
  padding: 0 var(--sm-space-4) var(--sm-space-3);
}

.sm-info-row {
  display: flex;
  justify-content: space-between;
  gap: var(--sm-space-4);
}

.sm-info-label {
  color: rgba(148, 163, 184, 0.6);
  font-weight: var(--sm-caption-weight);
}

.sm-info-value {
  color: rgba(226, 232, 240, 0.85);
  font-weight: var(--sm-body-weight);
}

.sm-info-divider {
  margin: var(--sm-space-1) 0;
  border: none;
  border-top: 1px solid rgba(139, 92, 246, 0.15);
}

/* ===== 时间控制（右下角） ===== */
.sm-time-controls {
  position: fixed;
  bottom: var(--sm-space-5);
  right: var(--sm-space-5);
  z-index: var(--sm-z-panel);
  background: rgba(15, 10, 30, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--sm-radius-md);
  padding: var(--sm-space-2) var(--sm-space-3);
  display: flex;
  align-items: center;
  gap: var(--sm-space-2);
  font-size: var(--sm-fs-caption);
  color: rgba(196, 181, 253, 0.7);
}

.sm-time-label {
  margin-right: var(--sm-space-1);
  color: rgba(148, 163, 184, 0.5);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.sm-time-btn {
  padding: 3px 8px;
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: var(--sm-radius-sm);
  color: rgba(226, 232, 240, 0.7);
  cursor: pointer;
  font-size: var(--sm-fs-micro);
  letter-spacing: 0.05em;
  transition: all var(--sm-duration-fast) var(--sm-ease-out);
  font-family: var(--sm-font-family);
}

.sm-time-btn:hover {
  background: rgba(139, 92, 246, 0.3);
  color: var(--sm-color-neutral-0);
  border-color: rgba(139, 92, 246, 0.5);
}

.sm-time-btn.active {
  background: rgba(139, 92, 246, 0.4);
  color: var(--sm-color-neutral-0);
}