/**
 * Layout Styles
 * Time Tracker v2
 */

/* ========================================
   Breakpoints (als Referenz):
   - sm: 640px
   - md: 768px
   - lg: 1024px
   - xl: 1280px
   ======================================== */

/* ========================================
   Container
   ======================================== */
.container {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.container--wide {
  max-width: 960px;
}

.container--lg {
  max-width: 1024px;
}

.container--full {
  max-width: 100%;
}

/* ========================================
   Split-View Layout (D1+D2)
   Desktop: Timer links fixiert, Content rechts scrollbar
   Mobile: Standard vertikales Layout
   ======================================== */
.app-split {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.app-split__left {
  width: 100%;
}

.app-split__right {
  width: 100%;
}

/* Desktop: Split-View ab 1024px */
@media (min-width: 1024px) {
  .app-split {
    flex-direction: row;
    max-width: 1280px;
    gap: var(--space-6);
    align-items: flex-start;
  }

  .app-split__left {
    position: sticky;
    top: calc(60px + var(--space-4)); /* Header-Höhe + Abstand */
    width: 320px;
    min-width: 320px;
    max-width: 320px;
    align-self: flex-start;
    max-height: calc(100vh - 60px - var(--space-4) - var(--space-4));
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--surface-border) transparent;
  }

  .app-split__left::-webkit-scrollbar {
    width: 3px;
  }

  .app-split__left::-webkit-scrollbar-thumb {
    background: var(--surface-border);
    border-radius: 3px;
  }

  .app-split__right {
    flex: 1;
    min-width: 0; /* Prevent overflow */
  }
}

/* ========================================
   App Layout
   ======================================== */
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  /* Soft Productivity: Clean solid background */
  background: var(--page-bg);
  /* Safe Area für iPhone Notch etc. */
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  /* Soft Productivity: Clean solid header */
  background: var(--surface-elevated);
  border-bottom: 1px solid var(--surface-border);
  box-shadow: var(--shadow-sm);
  padding: var(--space-3) var(--space-4);
  /* Safe Area oben für Notch */
  padding-top: max(var(--space-3), env(safe-area-inset-top));
}

.app-header__content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 640px;
  margin: 0 auto;
}

/* Desktop: Header auf volle Split-View Breite */
@media (min-width: 1024px) {
  .app-header__content {
    max-width: 1280px;
    padding: 0 var(--space-4);
  }
}

.app-header__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  /* Soft Productivity: Solid color, no gradient */
  color: var(--color-primary);
  background-clip: text;
  margin: 0;
}

/* 🎨 Header Actions - Brand-basiert */
.app-header__actions {
  display: flex;
  gap: var(--space-1);
}

.app-header__actions .btn--ghost {
  color: var(--text-secondary);
  background: transparent;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.app-header__actions .btn--ghost:hover:not(:disabled) {
  background: rgba(247, 165, 0, 0.1);
  color: var(--color-primary);
  transform: translateY(-1px);
}

/* Mobile: Kleinerer Titel */
@media (max-width: 639px) {
  .app-header__title {
    font-size: 1rem;
  }
}

/* ========================================
   D3: Sticky Mini-Timer
   Erscheint im Header beim Scrollen wenn Timer läuft
   ======================================== */
.mini-timer {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary);
  border-radius: var(--radius-full);
  color: var(--text-inverse);
  font-weight: 600;
  font-size: var(--text-sm);
  animation: mini-timer-slide-in 0.2s ease-out;
}

.mini-timer--visible {
  display: flex;
}

.mini-timer--break {
  background: var(--color-warning);
}

.mini-timer__time {
  font-family: var(--font-mono, monospace);
  font-size: var(--text-base);
  min-width: 70px;
  text-align: center;
}

.mini-timer__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast);
  font-size: 0.875rem;
}

.mini-timer__btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.mini-timer__btn:active {
  background: rgba(255, 255, 255, 0.4);
}

@keyframes mini-timer-slide-in {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Mobile: Mini-Timer kompakter */
@media (max-width: 639px) {
  .mini-timer {
    padding: var(--space-1) var(--space-2);
    gap: var(--space-1);
  }

  .mini-timer__time {
    font-size: var(--text-sm);
    min-width: 60px;
  }

  .mini-timer__btn {
    width: 24px;
    height: 24px;
    font-size: 0.75rem;
  }
}

.app-main {
  flex: 1;
  padding: var(--space-6) 0;
}

.app-footer {
  padding: var(--space-4);
  /* Safe Area unten für Home-Indicator */
  padding-bottom: max(var(--space-4), env(safe-area-inset-bottom));
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid var(--surface-border);
}

/* ========================================
   Stack Layout (Vertikal)
   ======================================== */
.stack {
  display: flex;
  flex-direction: column;
}

.stack--xs {
  gap: var(--space-1);
}
.stack--sm {
  gap: var(--space-2);
}
.stack--md {
  gap: var(--space-4);
}
.stack--lg {
  gap: var(--space-6);
}
.stack--xl {
  gap: var(--space-8);
}

/* ========================================
   Cluster Layout (Horizontal)
   ======================================== */
.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.cluster--xs {
  gap: var(--space-1);
}
.cluster--sm {
  gap: var(--space-2);
}
.cluster--md {
  gap: var(--space-4);
}
.cluster--lg {
  gap: var(--space-6);
}

.cluster--between {
  justify-content: space-between;
}

.cluster--center {
  justify-content: center;
}

/* ========================================
   Grid Layout
   ======================================== */
.grid {
  display: grid;
  gap: var(--space-4);
}

.grid--1 {
  grid-template-columns: 1fr;
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Responsive Grid - Mobile First */
@media (max-width: 639px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

/* sm: 640px+ */
@media (min-width: 640px) and (max-width: 767px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* md: 768px+ */
@media (min-width: 768px) and (max-width: 1023px) {
  .grid--4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Responsive Utility Classes */
@media (max-width: 639px) {
  .hide-sm {
    display: none !important;
  }
}

@media (max-width: 767px) {
  .hide-md {
    display: none !important;
  }
}

@media (max-width: 1023px) {
  .hide-lg {
    display: none !important;
  }
}

@media (min-width: 640px) {
  .show-sm-only {
    display: none !important;
  }
}

@media (min-width: 768px) {
  .show-md-only {
    display: none !important;
  }
}

/* ========================================
   Section Spacing
   ======================================== */
.section {
  padding: var(--space-6) 0;
}

.section + .section {
  border-top: 1px solid var(--surface-border);
}

/* Abstand zwischen Dashboard und Analytics */
#dashboard-section {
  margin-bottom: var(--space-8);
}

#analytics-section {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 2px solid var(--surface-border);
}

/* ========================================
   Loading Screen
   ======================================== */
.loading-screen {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 200px;
  color: var(--text-secondary);
}

/* ========================================
   M1: Bottom-Navigation (Mobile only)
   ======================================== */
.bottom-nav {
  display: none; /* Versteckt auf Desktop */
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--surface-elevated);
  border-top: 1px solid var(--surface-border);
  padding-bottom: env(safe-area-inset-bottom, 0); /* iPhone Notch */
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

@media (max-width: 639px) {
  .bottom-nav {
    display: flex;
    justify-content: space-around;
    align-items: stretch;
  }

  /* Mehr Padding unten für Bottom-Nav Platz */
  .app-main {
    padding-bottom: 70px;
  }

  /* Footer auf Mobile verstecken (redundant) */
  .app-footer {
    display: none;
  }

  /* Header-Actions auf Mobile reduzieren (nur Theme-Toggle) */
  .app-header__actions .btn--ghost:not(#theme-toggle) {
    display: none;
  }
}

.bottom-nav__item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-1);
  min-height: 60px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  position: relative;
}

.bottom-nav__item:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--color-primary);
  background: rgba(247, 165, 0, 0.08);
}

.bottom-nav__item::before {
  content: "";
  position: absolute;
  top: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 32px;
  height: 3px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
}

.bottom-nav__item:hover {
  background: rgba(247, 165, 0, 0.06);
  color: var(--text-primary);
}

.bottom-nav__item:active {
  background: rgba(247, 165, 0, 0.12);
  transform: scale(0.96);
}

.bottom-nav__item--active {
  color: var(--color-primary);
  background: rgba(247, 165, 0, 0.08);
}

.bottom-nav__item--active::before {
  transform: translateX(-50%) scaleX(1);
}

.bottom-nav__item--active .bottom-nav__icon {
  transform: scale(1.15);
}

.bottom-nav__icon {
  font-size: 1.375rem;
  line-height: 1;
  transition: transform 0.2s ease;
}

.bottom-nav__label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Badge für Mehr-Tab (Benachrichtigungen) */
.bottom-nav__item--badge::after {
  content: "";
  position: absolute;
  top: 6px;
  right: calc(50% - 14px);
  width: 8px;
  height: 8px;
  background: var(--color-danger);
  border-radius: 50%;
}

/* Mehr-Menü Dropdown */
.bottom-nav__more-menu {
  display: none;
  position: absolute;
  bottom: 100%;
  right: var(--space-2);
  margin-bottom: var(--space-2);
  background: var(--surface-elevated);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 180px;
  overflow: hidden;
}

.bottom-nav__more-menu--open {
  display: block;
  animation: slideUp 0.15s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.bottom-nav__more-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.875rem;
  text-align: left;
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.bottom-nav__more-item:hover {
  background: var(--surface-hover);
}

.bottom-nav__more-item:active {
  background: var(--surface-active);
}

.bottom-nav__more-item--danger {
  color: var(--color-danger);
}

/* ========================================
   M3: Pull-to-Refresh (Mobile only)
   ======================================== */
.pull-refresh {
  display: none; /* Versteckt auf Desktop */
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  height: 0;
  overflow: hidden;
  background: var(--color-primary);
  transition: height 0.2s ease;
}

@media (max-width: 639px) {
  .pull-refresh {
    display: block;
  }
}

.pull-refresh__content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  height: 60px;
  color: var(--text-inverse);
  font-size: 0.875rem;
  font-weight: 500;
}

.pull-refresh__icon {
  font-size: 1.25rem;
  transition: transform 0.2s ease;
}

.pull-refresh--pulling .pull-refresh__icon {
  transform: rotate(180deg);
}

.pull-refresh--loading .pull-refresh__icon {
  animation: spin 1s linear infinite;
}

.pull-refresh--success {
  background: var(--color-success);
}

.pull-refresh--success .pull-refresh__icon {
  animation: none;
}

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