@font-face {
  font-family: "AppFont";
  src: url("./syne.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: light dark;
  --font-family:
    "AppFont", -apple-system, BlinkMacSystemFont, "SF Pro Rounded", "Segoe UI",
    Roboto, sans-serif;

  /* --- LIGHT THEME --- */
  --bg-primary: #f6f8fb;
  --surface: #ffffff;
  --surface-active: #ebeef5;
  --text-main: #14181f;
  --text-muted: #7b8494;
  --tabs-bg: #eef2f7;
  --tab-indicator-bg: #ffffff;
  --tab-indicator-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
  --tab-active-text: #121927;
  --btn-nav-shadow: 0 4px 14px rgba(0, 0, 0, 0.05);
  --card-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  --modal-bg: #ffffff;
  --modal-overlay: rgba(0, 0, 0, 0.45);
  --modal-handle: #e2e8f0;
  --modal-shadow: 0 -10px 30px rgba(0, 0, 0, 0.1);
  --input-bg: #f8fafc;
  --input-border: #e2e8f0;
  --input-focus-bg: #ffffff;
  --input-focus-border: #3b82f6;
  --btn-save-bg: #14181f;
  --btn-save-text: #ffffff;
  --btn-delete-bg: #fee2e2;
  --btn-delete-text: #dc2626;

  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
}

/* --- DARK BLUE THEME --- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0c1322;
    --surface: #162032;
    --surface-active: #1f2c44;
    --text-main: #f1f5f9;
    --text-muted: #8e9db5;
    --tabs-bg: #121b2d;
    --tab-indicator-bg: #1e2c44;
    --tab-indicator-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
    --tab-active-text: #ffffff;
    --btn-nav-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
    --card-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
    --modal-bg: #151f31;
    --modal-overlay: rgba(5, 10, 20, 0.7);
    --modal-handle: #26354f;
    --modal-shadow: 0 -10px 30px rgba(0, 0, 0, 0.5);
    --input-bg: #0e1626;
    --input-border: #22324c;
    --input-focus-bg: #131d30;
    --input-focus-border: #38bdf8;
    --btn-save-bg: #f8fafc;
    --btn-save-text: #0c1322;
    --btn-delete-bg: rgba(239, 68, 68, 0.18);
    --btn-delete-text: #f87171;
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-family);
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  display: flex;
  justify-content: center;
  min-height: 100vh;
  transition:
    background-color 0.3s ease,
    color 0.3s ease;
}

.app-container {
  width: 100%;
  max-width: 480px;
  min-height: 100vh;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  padding: 16px 20px 40px;
}

.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0 16px;
}

.nav-btn {
  background: var(--surface);
  border: none;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-main);
  cursor: pointer;
  box-shadow: var(--btn-nav-shadow);
  transition:
    transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1),
    background 0.2s,
    color 0.2s;
}

.nav-btn:active {
  transform: scale(0.92);
  background: var(--surface-active);
}

.spin {
  animation: spinRotation 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes spinRotation {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* TABS */
.tabs-container {
  margin: 14px 0 24px;
  display: flex;
  justify-content: center;
}

.tabs-wrapper {
  position: relative;
  background: var(--tabs-bg);
  padding: 5px;
  border-radius: 30px;
  display: flex;
  width: 240px;
  transition: background 0.3s ease;
}

.tab-item {
  flex: 1;
  border: none;
  background: transparent;
  padding: 10px 0;
  font-size: 16px;
  font-weight: 800;
  color: var(--text-muted);
  cursor: pointer;
  z-index: 2;
  text-align: center;
  transition: color 0.25s ease;
}

.tab-item.active {
  color: var(--tab-active-text);
}

.tab-indicator {
  position: absolute;
  top: 5px;
  left: 5px;
  width: calc(50% - 5px);
  height: calc(100% - 10px);
  background: var(--tab-indicator-bg);
  border-radius: 25px;
  box-shadow: var(--tab-indicator-shadow);
  transition:
    transform 0.35s cubic-bezier(0.34, 1.35, 0.64, 1),
    background 0.3s ease;
  z-index: 1;
  pointer-events: none;
}

.tab-indicator.slide-past {
  transform: translateX(100%);
}

.cards-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  position: relative;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 24px 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--card-shadow);
  cursor: pointer;
  user-select: none;
  overflow: hidden;
  animation: cardEnter 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: calc(var(--card-index, 0) * 0.05s);
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.card:active {
  transform: scale(0.98);
}

@keyframes cardEnter {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.grad-0 {
  background: linear-gradient(135deg, #ffd3a5 0%, #fd6585 100%);
  color: #2b1118;
}
.grad-1 {
  background: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
  color: #0f2c4a;
}
.grad-2 {
  background: linear-gradient(135deg, #bbf2c8 0%, #7ee8fa 100%);
  color: #0c3327;
}
.grad-3 {
  background: linear-gradient(135deg, #fbc2eb 0%, #a6c1ee 100%);
  color: #31163e;
}

.card-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 80px;
  flex-shrink: 0;
  text-align: center;
}

.day-number {
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -1.5px;
}

.day-number.countdown {
  color: #ffffff;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.day-number.countup {
  color: currentColor;
}

.day-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.8px;
  margin-top: 5px;
  opacity: 0.85;
}

.card-right {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card-date {
  font-size: 13px;
  font-weight: 600;
  opacity: 0.75;
  font-feature-settings: "ss04" 1;
  margin-bottom: 3px;
}

.card-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.3;
  word-break: break-word;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.empty-state p {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}
.empty-state span {
  font-size: 13px;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.modal.hidden {
  display: none !important;
}

.modal:not(.hidden):not(.closing) .modal-overlay {
  animation: overlayFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.modal.closing .modal-overlay {
  animation: overlayFadeOut 0.22s ease forwards;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: var(--modal-overlay);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal:not(.hidden):not(.closing) .modal-sheet {
  animation: sheetSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.modal.closing .modal-sheet {
  animation: sheetSlideDown 0.24s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.modal-sheet {
  position: relative;
  width: 100%;
  max-width: 480px;
  background: var(--modal-bg);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  padding: 24px 24px 38px;
  box-shadow: var(--modal-shadow);
  will-change: transform;
}

.modal-handle {
  width: 44px;
  height: 5px;
  background: var(--modal-handle);
  border-radius: 99px;
  margin: -8px auto 20px;
  opacity: 0.8;
}

.modal-sheet h2 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--text-main);
}

/* Keyframes */
@keyframes sheetSlideUp {
  0% {
    transform: translateY(100%);
  }
  100% {
    transform: translateY(0);
  }
}

@keyframes sheetSlideDown {
  0% {
    transform: translateY(0);
  }
  100% {
    transform: translateY(100%);
  }
}

@keyframes overlayFadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

@keyframes overlayFadeOut {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.form-group input[type="text"],
.form-group input[type="date"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--input-border);
  font-size: 15px;
  font-weight: 600;
  background: var(--input-bg);
  color: var(--text-main);
  outline: none;
  transition:
    border-color 0.2s,
    background-color 0.2s,
    color 0.2s;
}

.form-group input:focus {
  border-color: var(--input-focus-border);
  background: var(--input-focus-bg);
}

.gradient-picker {
  display: flex;
  gap: 12px;
}

.gradient-radio {
  cursor: pointer;
}

.gradient-radio input {
  display: none;
}

.grad-preview {
  display: block;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.gradient-radio input:checked + .grad-preview {
  transform: scale(1.15);
  box-shadow:
    0 0 0 3px var(--modal-bg),
    0 0 0 5px var(--input-focus-border);
}

.modal-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.btn {
  flex: 1;
  padding: 14px;
  font-feature-settings: "ss04" 1;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition:
    opacity 0.2s,
    transform 0.1s,
    background 0.2s,
    color 0.2s;
}

.btn:active {
  transform: scale(0.98);
}

.btn-save {
  background: var(--btn-save-bg);
  color: var(--btn-save-text);
}

.btn-delete {
  background: var(--btn-delete-bg);
  color: var(--btn-delete-text);
}

.hidden {
  display: none !important;
}

/* Continuous spinning for refresh icon */
.spin {
  animation: spinRotation 0.75s linear infinite !important;
}

@keyframes spinRotation {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Floating sync pill */
.sync-loader {
  position: fixed;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  color: var(--text-main);
  padding: 8px 18px;
  border-radius: 30px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.22);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
  z-index: 95;
  border: 1px solid var(--input-border);
  animation: loaderSlideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  pointer-events: none;
  font-feature-settings: "ss04" 1;
}

.loader-spinner {
  width: 14px;
  height: 14px;
  border: 2.5px solid var(--text-muted);
  border-top-color: #38bdf8;
  border-radius: 50%;
  animation: spinRotation 0.7s linear infinite;
}

@keyframes loaderSlideDown {
  0% {
    opacity: 0;
    transform: translate(-50%, -10px) scale(0.95);
  }
  100% {
    opacity: 1;
    transform: translate(-50%, 0) scale(1);
  }
}

/* AUTH SCREEN STYLES  */
.auth-screen {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 200;
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease;
}

.auth-screen.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.auth-card {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--input-border);
  padding: 32px 28px;
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.auth-header {
  text-align: center;
  margin-bottom: 24px;
}

.auth-header h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-main);
}

.auth-header p {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

.auth-error {
  background: rgba(220, 38, 38, 0.15);
  color: #f87171;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  line-height: 1.4;
}

.form-group input[type="email"],
.form-group input[type="password"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--input-border);
  font-size: 15px;
  font-weight: 600;
  background: var(--input-bg);
  color: var(--text-main);
  outline: none;
  transition:
    border-color 0.2s,
    background-color 0.2s;
}

.form-group input[type="email"]:focus,
.form-group input[type="password"]:focus {
  border-color: var(--input-focus-border);
  background: var(--input-focus-bg);
}