/* =====================
   Temas: Light & Dark
   ===================== */
:root {
    --bg-primary: #f8f9fa;
    --bg-secondary: #fff;
    --text-primary: #222;
    --text-secondary: #666;
    --accent: #667eea;
    --accent-dark: #4b5bdc;
    --success: #28a745;
    --danger: #dc3545;
    --shadow: 0 4px 24px rgba(102, 126, 234, 0.08);
    --card-bg: #fff;
    --border: #e1e5e9;
    --input-bg: #fff;
    --input-border: #e1e5e9;
    --input-focus: #667eea;
}
[data-theme="dark"] {
    --bg-primary: #181a1b;
    --bg-secondary: #23272f;
    --text-primary: #f5f5f5;
    --text-secondary: #bdbdbd;
    --accent: #8faaff;
    --accent-dark: #667eea;
    --success: #28a745;
    --danger: #dc3545;
    --shadow: 0 4px 24px rgba(102, 126, 234, 0.18);
    --card-bg: #23272f;
    --border: #333;
    --input-bg: #23272f;
    --input-border: #444;
    --input-focus: #8faaff;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    margin: 0;
    transition: background 0.3s, color 0.3s;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 16px;
}

.header {
    background: var(--card-bg);
    box-shadow: var(--shadow);
    border-radius: 12px;
    margin-bottom: 32px;
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}
.logo {
    font-size: 1.5em;
    font-weight: bold;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 8px;
}
.theme-toggle {
    background: none;
    border: none;
    font-size: 1.3em;
    cursor: pointer;
    color: var(--accent);
    transition: color 0.2s;
    border-radius: 50%;
    padding: 8px;
}
.theme-toggle:hover {
    color: var(--accent-dark);
    background: var(--bg-secondary);
}

/* Home */
.home-main {
    text-align: center;
    margin-top: 40px;
}
.home-main h1 {
    font-size: 2.2em;
    margin-bottom: 10px;
}
.highlight {
    color: var(--accent);
}
.subtitle {
    color: var(--text-secondary);
    margin-bottom: 32px;
}
.home-actions {
    display: flex;
    gap: 18px;
    justify-content: center;
    margin-bottom: 24px;
}
.home-info {
    margin-top: 24px;
    color: var(--text-secondary);
    font-size: 1.1em;
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px; /* diminuído */
    border: none;
    border-radius: 8px;
    font-size: 0.95em; /* diminuído */
    font-weight: 600;
    cursor: pointer;
    background: var(--accent);
    color: #fff;
    transition: background 0.2s, box-shadow 0.2s, color 0.2s;
    box-shadow: var(--shadow);
    text-decoration: none;
}
.btn-primary {
    background: var(--accent);
}
.btn-success {
    background: var(--success);
}
.btn-danger {
    background: var(--danger);
}
.btn:hover {
    background: var(--accent-dark);
    color: #fff;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 32px 24px;
    margin-bottom: 24px;
    transition: box-shadow 0.2s, background 0.2s;
}

/* Inputs */
.form-control {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  border: 2px solid var(--input-border);
  border-radius: 8px;
  font-size: 1em;
  background: var(--input-bg);
  color: var(--text-primary);
  margin-bottom: 10px;
  transition: border-color 0.2s, background 0.2s;
}
.form-control:focus {
    border-color: var(--input-focus);
    outline: none;
}

.form-group label {
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    display: block;
}

.form-text {
    color: var(--text-secondary);
    font-size: 0.95em;
    margin-bottom: 8px;
}

/* Dashboard grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
  margin-top: 32px;
}

/* Modal de criar grupo */
#createGroupModal {
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0,0,0,0.45);
  z-index: 99999;
}
#createGroupModal > div {
  background: var(--card-bg);
  color: var(--text-primary);
  box-shadow: 0 4px 32px rgba(0,0,0,0.28);
  padding: 32px 24px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  min-width: 340px;
  max-width: 95vw;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
#createGroupModal h3, #createGroupModal label {
  color: var(--text-primary);
}
#createGroupModal input,
#createGroupModal select {
  background: var(--input-bg);
  color: var(--text-primary);
  border: 2px solid var(--input-border);
}
#createGroupModal input:focus,
#createGroupModal select:focus {
  border-color: var(--input-focus);
  outline: none;
}
#createGroupModal button {
  color: #fff;
}
#createGroupModal form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
#createGroupModal label {
  text-align: left;
  margin-bottom: 2px;
}
#createGroupModal input,
#createGroupModal select,
#createGroupModal button {
  max-width: 100%;
  box-sizing: border-box;
}

body[data-theme="dark"] #createGroupModal > div {
  background: var(--card-bg) !important;
  color: var(--text-primary) !important;
  box-shadow: 0 4px 32px rgba(0,0,0,0.28) !important;
}
body[data-theme="dark"] #createGroupModal h3,
body[data-theme="dark"] #createGroupModal label {
  color: var(--text-primary) !important;
}
body[data-theme="dark"] #createGroupModal input,
body[data-theme="dark"] #createGroupModal select {
  background: var(--input-bg) !important;
  color: var(--text-primary) !important;
  border: 2px solid var(--input-border) !important;
}
body[data-theme="dark"] #createGroupModal input:focus,
body[data-theme="dark"] #createGroupModal select:focus {
  border-color: var(--input-focus) !important;
  outline: none !important;
}
body[data-theme="dark"] #createGroupModal button {
  color: #fff !important;
}

/* Botão de Fullscreen */
.fullscreen-btn {
  position: fixed;
  bottom: 16px;
  right: 16px;
  z-index: 9999;
  background: #222;
  color: #fff;
  border: none;
  border-radius: 4px;
  padding: 10px 16px;
  cursor: pointer;
  font-size: 18px;
  opacity: 0.8;
  transition: opacity 0.2s;
}
.fullscreen-btn:hover {
  opacity: 1;
}

#groupMessageForm {
    display: flex;
    gap: 4px;
    align-items: center;
    width: 100% !important;
    max-width: 100% !important;
}
#groupMessageInput {
    flex: 1 1 0% !important;
    min-width: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
    margin-bottom: 0 !important;
}
#groupMessageForm button,
#groupMessageForm select {
    flex: 0 0 auto !important;
    min-width: 70px !important;
    white-space: nowrap !important;
    margin-bottom: 0 !important;
}

@media (max-width: 900px) {
  .container {
    padding: 8px 2vw;
  }
  .header {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
  .header-content {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }
  .dashboard-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .card {
    padding: 18px 8px;
  }
}
@media (max-width: 600px) {
  .container {
    padding: 4px 1vw;
  }
  .header {
    padding: 8px 4px;
    font-size: 0.98em;
  }
  .logo {
    font-size: 1.1em;
  }
  .btn, .btn-sm {
    padding: 10px 12px;
    font-size: 0.98em;
  }
  #createGroupModal > div {
    min-width: 98vw;
    padding: 10px 2vw;
    max-width: 99vw;
  }
  #createGroupModal form {
    gap: 8px;
  }
  .form-control {
    font-size: 0.98em;
    padding: 10px 8px;
  }
  .card {
    padding: 12px 4px;
  }
  .friends-list, #receivedMessagesList, #groupsList, #groupInvitesList {
    max-height: 180px;
    overflow-y: auto;
  }
} 

/* Responsividade para chat (formulário, botões e opções) */
@media (max-width: 900px) {
  .card > div[style*='flex: 2 1 320px'] {
    min-width: 0 !important;
  }
}
@media (max-width: 700px) {
  .fullscreen-btn {
    top: 12px !important;
    right: 12px !important;
    left: auto !important;
    bottom: auto !important;
    position: fixed !important;
    z-index: 9999;
  }
  .card > div[style*='flex: 2 1 320px'] {
    min-width: 0 !important;
    width: 100% !important;
  }
  #messageForm {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 8px !important;
  }
  #messageInput {
    width: 100% !important;
    min-width: 0 !important;
    box-sizing: border-box !important;
  }
  #messageForm button[type='submit'] {
    width: 100% !important;
    min-width: 0 !important;
    margin-left: 0 !important;
  }
  /* Opções abaixo do form em coluna */
  .card > div > div[style*='justify-content: center'] {
    flex-direction: column !important;
    gap: 12px !important;
    align-items: stretch !important;
  }
  #tempMsgConfig, #deleteConversationBtn {
    justify-content: flex-start !important;
  }
}
@media (max-width: 480px) {
  .card {
    padding: 8px !important;
  }
  #messageInput, #messageForm button[type='submit'] {
    font-size: 1em !important;
    height: 36px !important;
  }
  #tempMsgConfig label, #tempMsgConfig select {
    font-size: 0.98em !important;
  }
  #deleteConversationBtn {
    font-size: 0.98em !important;
    padding: 6px 10px !important;
  }
}