/* style.css - 極致奢華企業級庫存管理系統 */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&family=Noto+Sans+TC:wght@300;400;500;700;900&display=swap');

:root {
  --bg-color: #0b0f19;
  --panel-bg: rgba(20, 26, 46, 0.65);
  --panel-border: rgba(229, 193, 88, 0.15);
  --gold: #e5c158;
  --gold-glow: rgba(229, 193, 88, 0.4);
  --gold-hover: #f3d47a;
  --danger: #ef4444;
  --danger-hover: #f87171;
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --font-family: 'Outfit', 'Noto Sans TC', sans-serif;
  --radius: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
  position: relative;
}

/* 背景霓虹發光特效 */
.bg-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(150px);
  z-index: -1;
  opacity: 0.15;
  pointer-events: none;
}

.bg-glow-1 {
  background: radial-gradient(circle, var(--gold) 0%, transparent 70%);
  top: -10%;
  left: -10%;
}

.bg-glow-2 {
  background: radial-gradient(circle, #3b82f6 0%, transparent 70%);
  bottom: -10%;
  right: -10%;
}

/* 隱藏元素用 */
.hidden {
  display: none !important;
}

/* ==================== 登入/註冊樣式 ==================== */
.auth-container {
  width: 100%;
  max-width: 450px;
  padding: 20px;
  animation: scaleIn 0.5s ease-out;
}

.auth-card {
  background: var(--panel-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 40px 30px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.auth-logo {
  text-align: center;
  margin-bottom: 30px;
}

.logo-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: 10px;
  filter: drop-shadow(0 0 10px var(--gold-glow));
}

.auth-logo h2 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: #fff;
  margin-bottom: 5px;
}

.auth-logo p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.auth-tabs {
  display: flex;
  border-bottom: 2px solid rgba(255, 255, 255, 0.05);
  margin-bottom: 25px;
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-muted);
  padding: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
}

.tab-btn:hover {
  color: #fff;
}

.tab-btn.active {
  color: var(--gold);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gold);
  box-shadow: 0 0 10px var(--gold-glow);
}

/* 輸入框樣式 */
.input-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
}

.input-group label {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
  color: var(--gold);
}

.input-group input {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 12px 16px;
  color: #fff;
  font-size: 1rem;
  transition: var(--transition);
}

.input-group input:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 12px rgba(229, 193, 88, 0.25);
  background: rgba(0, 0, 0, 0.5);
}

/* 按鈕樣式 */
.submit-btn {
  width: 100%;
  background: linear-gradient(135deg, var(--gold) 0%, #b89530 100%);
  color: #0b0f19;
  border: none;
  border-radius: 8px;
  padding: 14px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(229, 193, 88, 0.3);
  margin-top: 10px;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(229, 193, 88, 0.5);
  background: linear-gradient(135deg, var(--gold-hover) 0%, var(--gold) 100%);
}

.submit-btn:active {
  transform: translateY(0);
}

/* ==================== 儀表板樣式 ==================== */
.dashboard-container {
  width: 100%;
  max-width: 1200px;
  padding: 30px 20px;
  align-self: flex-start;
  animation: fadeIn 0.6s ease-out;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--panel-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 20px 30px;
  margin-bottom: 25px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 15px;
}

.brand-icon {
  font-size: 2.5rem;
  filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.5));
}

.dashboard-header h1 {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
}

.welcome-text {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 2px;
}

#user-name {
  color: var(--gold);
  font-weight: 700;
}

.logout-btn {
  background: transparent;
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #f87171;
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.logout-btn:hover {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

/* 儀表板主要內容區 */
.dashboard-content {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 25px;
}

@media (max-width: 900px) {
  .dashboard-content {
    grid-template-columns: 1fr;
  }
}

.form-card, .list-card {
  background: var(--panel-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  transition: var(--transition);
}

.form-card:hover, .list-card:hover {
  border-color: rgba(229, 193, 88, 0.3);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.card-header {
  margin-bottom: 25px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 15px;
}

.card-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 5px;
}

.card-header p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.form-row {
  display: flex;
  gap: 15px;
}

.form-row .input-group {
  flex: 1;
}

/* 表格樣式 */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th, td {
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

th {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 1px;
  color: var(--gold);
  background: rgba(0, 0, 0, 0.2);
}

td {
  font-size: 0.95rem;
  color: #e5e7eb;
}

tr {
  transition: var(--transition);
}

tr:hover td {
  color: #fff;
  background: rgba(255, 255, 255, 0.02);
}

/* 操作按鈕 */
.action-btn {
  border: none;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  margin-right: 6px;
}

.action-btn.edit {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.action-btn.edit:hover {
  background: #3b82f6;
  color: #fff;
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.4);
}

.action-btn.delete {
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.action-btn.delete:hover {
  background: var(--danger);
  color: #fff;
  box-shadow: 0 0 10px rgba(239, 68, 68, 0.4);
}

/* 動畫定義 */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}