/* ==========================================================================
   DESIGN VARIABLES & SYSTEM
   ========================================================================== */
:root {
  --font-title: 'Plus Jakarta Sans', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'DM Mono', monospace;

  --bg-color: #06050b;
  --text-primary: #f8f9fa;
  --text-secondary: #908ea3;
  
  --glass-bg: rgba(255, 255, 255, 0.02);
  --glass-border: rgba(255, 255, 255, 0.05);
  --glass-border-hover: rgba(255, 255, 255, 0.12);
  --glass-bg-hover: rgba(255, 255, 255, 0.04);
  --glass-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.5);

  --accent-color: #b388ff; /* Soft Violet */
  --accent-glow: rgba(179, 136, 255, 0.25);
  --success-color: #00e676;
  --warning-color: #ffd600;
  --error-color: #ff5252;

  --gradient-title: linear-gradient(135deg, #f8f9fa 30%, #b388ff 100%);
  --gradient-accent: linear-gradient(135deg, #7c4dff 0%, #b388ff 100%);
  
  --radius: 14px;
  --radius-lg: 20px;
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-body);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}

/* Ambient glow blobs */
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(150px);
  z-index: -1;
  opacity: 0.25;
  pointer-events: none;
}
.bg-glow-1 {
  width: 600px;
  height: 600px;
  background: #7c4dff;
  top: -150px;
  right: -100px;
}
.bg-glow-2 {
  width: 500px;
  height: 500px;
  background: #b388ff;
  bottom: 10%;
  left: -150px;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 20px;
  flex-grow: 1;
}

/* Glassmorphic Cards */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.glass-card:hover {
  border-color: var(--glass-border-hover);
  background: var(--glass-bg-hover);
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-icon {
  font-size: 2.4rem;
}

.header-title {
  font-family: var(--font-title);
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -1px;
  background: var(--gradient-title);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-subtitle {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-top: 4px;
}

.header-right {
  display: flex;
  gap: 12px;
}

/* ==========================================================================
   LAYOUT STRUCTURE
   ========================================================================== */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 28px;
}

.left-col, .right-col {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* ==========================================================================
   FORM STYLING
   ========================================================================== */
.form-card h2, .list-card h2 {
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.appointment-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-group label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input-group input, .input-group select, .input-group textarea {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: all 0.3s;
}

.input-group textarea {
  resize: vertical;
}

.input-group input:focus, .input-group select:focus, .input-group textarea:focus {
  border-color: var(--accent-color);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* Styling Dropdown Options - Omit browser default white */
.input-group select option {
  background-color: #0b0918;
  color: var(--text-primary);
}

.btn-submit {
  width: 100%;
  margin-top: 8px;
  padding: 12px;
  font-size: 0.95rem;
}

/* ==========================================================================
   APPOINTMENTS LIST STYLING
   ========================================================================== */
.appointments-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.no-appts {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  padding: 40px 0;
}

.appt-card {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: all 0.25s ease;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.appt-card:hover {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--glass-border-hover);
}

.appt-cat-badge {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
  background: rgba(179, 136, 255, 0.08);
  border: 1px solid rgba(179, 136, 255, 0.15);
}

/* Categories color variations */
.appt-card[data-cat="Medical"] .appt-cat-badge {
  background: rgba(255, 82, 82, 0.08);
  border-color: rgba(255, 82, 82, 0.15);
}
.appt-card[data-cat="Work"] .appt-cat-badge {
  background: rgba(0, 229, 255, 0.08);
  border-color: rgba(0, 229, 255, 0.15);
}
.appt-card[data-cat="Personal"] .appt-cat-badge {
  background: rgba(0, 230, 118, 0.08);
  border-color: rgba(0, 230, 118, 0.15);
}
.appt-card[data-cat="Education"] .appt-cat-badge {
  background: rgba(255, 214, 0, 0.08);
  border-color: rgba(255, 214, 0, 0.15);
}

.appt-details {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0; /* allows text truncation */
}

.appt-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.appt-title-text {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.appt-countdown {
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(0, 230, 118, 0.1);
  color: var(--success-color);
  padding: 2px 8px;
  border-radius: 20px;
  white-space: nowrap;
}
.appt-countdown.due {
  background: rgba(255, 82, 82, 0.15);
  color: var(--error-color);
}
.appt-countdown.passed {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

.appt-provider-text {
  font-size: 0.82rem;
  color: var(--accent-color);
  font-weight: 500;
}

.appt-notes-text {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.3;
}

.appt-datetime-row {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.btn-delete-appt {
  background: rgba(255, 82, 82, 0.05);
  border: 1px solid rgba(255, 82, 82, 0.15);
  color: var(--error-color);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
  padding: 0;
}
.btn-delete-appt:hover {
  background: rgba(255, 82, 82, 0.2);
  border-color: rgba(255, 82, 82, 0.35);
  transform: scale(1.05);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  white-space: nowrap;
}
.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--gradient-accent);
  color: #030105;
  box-shadow: 0 4px 15px var(--accent-glow);
  font-weight: 700;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(124, 77, 255, 0.4);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--glass-border-hover);
}

.btn-danger {
  background: rgba(255, 82, 82, 0.1);
  color: var(--error-color);
  border: 1px solid rgba(255, 82, 82, 0.2);
}
.btn-danger:hover {
  background: rgba(255, 82, 82, 0.2);
  border-color: rgba(255, 82, 82, 0.3);
}

/* ==========================================================================
   AUTH LOADING OVERLAY
   ========================================================================== */
.auth-loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-color);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.05);
  border-top-color: var(--accent-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* ==========================================================================
   TOASTS & ANIMATIONS
   ========================================================================== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: rgba(6, 5, 11, 0.95);
  border: 1px solid var(--accent-color);
  color: var(--text-primary);
  padding: 12px 24px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  z-index: 3000;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ==========================================================================
   DESKTOP / TABLET RESPONSIVENESS
   ========================================================================== */
@media (max-width: 820px) {
  .main-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .app-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .header-right {
    width: 100%;
    justify-content: space-between;
  }
  
  .container {
    padding: 24px 16px;
  }
}

@media (max-width: 550px) {
  .input-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
}

@media (max-width: 480px) {
  .appt-card {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 10px !important;
    padding: 14px !important;
    position: relative !important;
  }
  .appt-title-row {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 6px !important;
    width: 100% !important;
  }
  .appt-title-text {
    white-space: normal !important;
    overflow: visible !important;
    text-overflow: clip !important;
    word-break: break-word !important;
    max-width: calc(100% - 30px) !important;
  }
  .btn-delete-appt {
    position: absolute !important;
    top: 14px !important;
    right: 14px !important;
  }
}