/* --- MATRIX RAIN THEME WITH ENHANCED HIGH-TECH STYLING --- */
@import url("https://fonts.googleapis.com/css2?family=Share+Tech+Mono:wght@400&family=Orbitron:wght@400;700;900&display=swap");

:root {
  --matrix-green: #00ff41;
  --matrix-dark-green: #008f11;
  --matrix-bright: #39ff14;
  --matrix-dim: #004d00;
  --background-color: #000000;
  --background-secondary: #0a0a0a;
  --text-color: var(--matrix-green);
  --glow-color: rgba(0, 255, 65, 0.8);
  --border-color: #0d4d1a;
  --error-color: #ff0040;
  --warning-color: #ffaa00;
  font-family: "Share Tech Mono", "Courier New", monospace;
}

/* --- MATRIX RAIN ANIMATION --- */
@keyframes matrix-rain {
  0% {
    transform: translateY(-100vh);
    opacity: 1;
  }
  100% {
    transform: translateY(100vh);
    opacity: 0;
  }
}

@keyframes matrix-glow {
  0%,
  100% {
    text-shadow: 0 0 5px var(--glow-color), 0 0 10px var(--glow-color);
  }
  50% {
    text-shadow: 0 0 10px var(--glow-color), 0 0 20px var(--glow-color), 0 0 30px var(--glow-color);
  }
}

@keyframes scan-line {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(100vh);
  }
}

@keyframes flicker {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

/* --- MATRIX RAIN BACKGROUND --- */
.matrix-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.matrix-column {
  position: absolute;
  top: -100vh;
  font-family: "Share Tech Mono", monospace;
  font-size: 14px;
  color: var(--matrix-green);
  animation: matrix-rain linear infinite;
  white-space: pre;
  line-height: 1.2;
}

/* --- SCANNING LINE EFFECT --- */
.scan-line {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--matrix-bright), transparent);
  animation: scan-line 3s linear infinite;
  z-index: 1000;
  pointer-events: none;
}

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

body {
  background: var(--background-color);
  color: var(--text-color);
  font-family: "Share Tech Mono", monospace;
  text-shadow: 0 0 5px var(--glow-color);
  overflow-x: hidden;
  position: relative;
}

/* --- ENHANCED LOGIN/REGISTER PAGE --- */
.login-container {
  width: 100%;
  max-width: 500px;
  background: rgba(0, 20, 0, 0.95);
  border: 2px solid var(--matrix-green);
  border-radius: 10px;
  padding: 2.5rem;
  box-shadow: 0 0 30px rgba(0, 255, 65, 0.3), inset 0 0 30px rgba(0, 255, 65, 0.1);
  margin: 2rem auto;
  position: relative;
  backdrop-filter: blur(10px);
  animation: matrix-glow 3s ease-in-out infinite;
}

.login-container::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, var(--matrix-green), var(--matrix-bright), var(--matrix-green));
  border-radius: 12px;
  z-index: -1;
  animation: flicker 2s ease-in-out infinite;
}

h1,
h2 {
  text-align: center;
  letter-spacing: 6px;
  text-transform: uppercase;
  margin: 1rem 0;
  font-family: "Orbitron", monospace;
  font-weight: 900;
  text-shadow: 0 0 10px var(--glow-color);
}

h1 {
  font-size: 2.5rem;
  color: var(--matrix-bright);
  margin-bottom: 2rem;
}

h2 {
  font-size: 1.2rem;
  color: var(--matrix-green);
  margin-bottom: 1.5rem;
}

input,
button {
  font-family: "Share Tech Mono", monospace;
  background: rgba(0, 0, 0, 0.8);
  border: 1px solid var(--matrix-green);
  color: var(--text-color);
  padding: 15px 20px;
  width: 100%;
  margin-bottom: 1rem;
  font-size: 1rem;
  border-radius: 5px;
  transition: all 0.3s ease;
}

input:focus {
  outline: none;
  box-shadow: 0 0 15px var(--glow-color);
  border-color: var(--matrix-bright);
  background: rgba(0, 20, 0, 0.9);
}

button {
  background: linear-gradient(45deg, var(--matrix-dark-green), var(--matrix-green));
  cursor: pointer;
  border: 2px solid var(--matrix-green);
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 2px;
  position: relative;
  overflow: hidden;
}

button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

button:hover::before {
  left: 100%;
}

button:hover,
button:focus {
  background: linear-gradient(45deg, var(--matrix-green), var(--matrix-bright));
  color: var(--background-color);
  text-shadow: none;
  box-shadow: 0 0 20px var(--glow-color);
  transform: translateY(-2px);
}

.captcha-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.validation-error {
  color: var(--error-color);
  text-shadow: 0 0 10px #ff0000;
  text-align: center;
  margin-bottom: 1rem;
  padding: 15px;
  border: 1px solid var(--error-color);
  background: rgba(255, 0, 0, 0.1);
  border-radius: 5px;
  display: none;
  animation: flicker 1s ease-in-out infinite;
}

/* --- ENHANCED DASHBOARD --- */
.dashboard-container {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: rgba(0, 10, 0, 0.95);
  border: 1px solid var(--border-color);
  box-shadow: 0 0 50px rgba(0, 255, 65, 0.2);
  position: relative;
}

.sidebar {
  padding: 1.5rem;
  overflow-y: auto;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
}

.chat-area {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-grow: 1;
  background: rgba(0, 5, 0, 0.9);
}

@media (min-width: 768px) {
  .dashboard-container {
    display: grid;
    grid-template-columns: 350px 1fr;
    flex-direction: row;
  }
  .sidebar {
    border-right: 2px solid var(--border-color);
    border-bottom: none;
  }
  .chat-area {
    display: grid;
    grid-template-rows: auto 1fr auto auto;
  }
}

/* --- ENHANCED SIDEBAR STYLES --- */
.sidebar-header {
  margin-bottom: 1.5rem;
}

.sidebar-header h3 {
  font-family: "Orbitron", monospace;
  font-weight: 700;
  color: var(--matrix-bright);
  text-shadow: 0 0 10px var(--glow-color);
  margin-bottom: 1rem;
}

#search-results,
#conversations-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.search-result,
.conversation-item {
  padding: 12px 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 5px;
  background: rgba(0, 0, 0, 0.5);
}

.search-result:hover,
.conversation-item:hover {
  border-color: var(--matrix-green);
  background: rgba(0, 255, 65, 0.15);
  box-shadow: 0 0 15px rgba(0, 255, 65, 0.3);
  transform: translateX(5px);
}

.conversation-item.active {
  background: linear-gradient(45deg, var(--matrix-dark-green), rgba(0, 255, 65, 0.3));
  border-color: var(--matrix-bright);
  box-shadow: 0 0 20px rgba(0, 255, 65, 0.4);
}

.logout-link {
  margin-top: auto;
  padding: 1rem;
  text-align: center;
  text-decoration: none;
  color: var(--error-color);
  border-top: 1px solid var(--border-color);
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: bold;
}

.logout-link:hover {
  color: var(--matrix-bright);
  text-shadow: 0 0 10px var(--error-color);
}

/* --- ENHANCED CHAT AREA --- */
#chat-header {
  padding: 1.5rem;
  border-bottom: 2px solid var(--border-color);
  text-align: center;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
}

#chat-header h2 {
  font-family: "Orbitron", monospace;
  color: var(--matrix-bright);
  text-shadow: 0 0 15px var(--glow-color);
}

.message-window {
  padding: 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex-grow: 1;
  background: rgba(0, 0, 0, 0.6);
}

.message {
  display: flex;
  max-width: 85%;
  animation: flicker 0.1s ease-in-out;
}

.message.sent {
  align-self: flex-end;
}

.message.received {
  align-self: flex-start;
}

.message-content {
  padding: 12px 18px;
  border-radius: 8px;
  border: 1px solid var(--matrix-green);
  position: relative;
  backdrop-filter: blur(3px);
}

.message.sent .message-content {
  background: linear-gradient(135deg, rgba(0, 143, 17, 0.8), rgba(0, 255, 65, 0.3));
  box-shadow: 0 0 10px rgba(0, 255, 65, 0.3);
}

.message.received .message-content {
  background: linear-gradient(135deg, rgba(0, 20, 0, 0.9), rgba(0, 100, 0, 0.3));
  box-shadow: 0 0 10px rgba(0, 255, 65, 0.2);
}

#typing-indicator {
  height: 25px;
  font-style: italic;
  color: var(--warning-color);
  padding: 0 1.5rem;
  text-shadow: 0 0 5px var(--warning-color);
}

/* --- ENHANCED INPUT AREA --- */
.message-input-area {
  padding: 1.5rem;
  border-top: 2px solid var(--border-color);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(10px);
}

#message-input {
  margin-bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  border: 2px solid var(--matrix-green);
  border-radius: 25px;
  padding: 15px 25px;
  font-size: 1rem;
}

#message-input:focus {
  box-shadow: 0 0 20px var(--glow-color);
  border-color: var(--matrix-bright);
}

#send-button {
  border-radius: 25px;
  padding: 15px 30px;
  background: linear-gradient(45deg, var(--matrix-dark-green), var(--matrix-green));
  border: 2px solid var(--matrix-green);
  min-width: 100px;
}

#send-button:hover {
  background: linear-gradient(45deg, var(--matrix-green), var(--matrix-bright));
  box-shadow: 0 0 25px var(--glow-color);
}

/* --- SCROLLBAR STYLING --- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.5);
}

::-webkit-scrollbar-thumb {
  background: var(--matrix-green);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--matrix-bright);
}

/* --- RESPONSIVE ENHANCEMENTS --- */
@media (max-width: 767px) {
  .login-container {
    margin: 1rem;
    padding: 1.5rem;
  }

  h1 {
    font-size: 2rem;
  }

  .sidebar {
    padding: 1rem;
  }

  .message-input-area {
    padding: 1rem;
  }
}