:root {
  --primary: #1b2c47;
  --accent: #2d6df6;
  --muted: #5e6787;
  --panel: #ffffff;
  --bg: #f4f7ff;
}

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

body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--primary);
  min-height: 100vh;
}

.login-layout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  min-height: 100vh;
}

.form-panel {
  background: var(--panel);
  padding: 3rem clamp(2rem, 5vw, 4rem);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  box-shadow: 20px 0 60px rgba(12, 18, 44, 0.06);
  z-index: 2;
}

.form-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  text-decoration: none;
  display: inline-flex;
  flex-direction: column;
  line-height: 1;
  font-weight: 700;
  background: #fff;
  padding: 0.3rem 1rem;
  border-radius: 0;
  box-shadow: 0 15px 35px rgba(15, 31, 60, 0.08);
  width: fit-content;
  align-items: center;
}

.brand .logo-wordmark {
  font-size: 1.7rem;
  color: #2f6ef5;
  letter-spacing: 0.01em;
}

.brand .logo-subtitle {
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: #a2aeca;
  font-weight: 500;
  margin-top: 0.35rem;
  text-align: center;
}

.header-login {
  text-decoration: none;
  padding: 0.6rem 1.2rem;
  border: 1px solid rgba(27, 44, 71, 0.2);
  color: var(--primary);
  font-weight: 600;
  border-radius: 0;
  background: #fff;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.header-login:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.mode-toggle {
  display: inline-flex;
  border: 1px solid rgba(45, 109, 246, 0.2);
  border-radius: 0;
  overflow: hidden;
  width: fit-content;
}

.toggle-btn {
  border: none;
  background: transparent;
  padding: 0.5rem 1.2rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--muted);
  transition: background 0.2s ease, color 0.2s ease;
}

.toggle-btn.active {
  background: rgba(45, 109, 246, 0.15);
  color: var(--accent);
}

.auth-form {
  display: grid;
  gap: 1rem;
}

.auth-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
}

.auth-form input {
  border-radius: 0;
  border: 1px solid rgba(27, 44, 71, 0.25);
  padding: 0.9rem 1rem;
  font-size: 1rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.auth-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 109, 246, 0.2);
}

.remember {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.form-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  border: none;
  border-radius: 0;
  padding: 0.85rem 1.6rem;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 15px 30px rgba(45, 109, 246, 0.35);
}

.btn.ghost {
  border: 1px solid rgba(45, 109, 246, 0.3);
  background: transparent;
  color: var(--accent);
}

.btn.google {
  width: 100%;
  border: 1px solid rgba(45, 109, 246, 0.3);
  background: transparent;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.btn:hover {
  transform: translateY(-1px);
}

.google-icon {
  width: 24px;
  height: 24px;
  border-radius: 0;
  background: linear-gradient(135deg, #ea4335, #4285f4);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

.link-button {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 0.9rem;
  text-decoration: underline;
}

.divider {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.divider span:first-child,
.divider span:last-child {
  flex: 1;
  height: 1px;
  background: rgba(27, 44, 71, 0.1);
}

.help-text {
  font-size: 0.85rem;
  color: var(--muted);
}

.help-text a {
  color: var(--accent);
  text-decoration: none;
}

.visual-panel {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, rgba(45, 109, 246, 0.15), rgba(131, 96, 255, 0.12));
  padding: 4rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: var(--primary);
}

.visual-content {
  max-width: 360px;
  background: rgba(255, 255, 255, 0.7);
  padding: 2rem;
  border-radius: 0;
  backdrop-filter: blur(6px);
  box-shadow: 0 25px 45px rgba(12, 20, 38, 0.18);
  position: relative;
  z-index: 1;
}

.visual-content ul {
  margin-top: 1rem;
  color: var(--muted);
  display: grid;
  gap: 0.4rem;
}

.visual-content li {
  list-style: none;
  position: relative;
  padding-left: 1.2rem;
}

.visual-content li::before {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 0;
  background: var(--accent);
  position: absolute;
  top: 0.45rem;
  left: 0;
}

.visual-pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(45, 109, 246, 0.18) 1px, transparent 0);
  background-size: 32px 32px;
  opacity: 0.6;
}

.toast {
  position: fixed;
  left: 50%;
  top: 1.5rem;
  transform: translate(-50%, -20px);
  background: #101b30;
  color: #fff;
  padding: 0.9rem 1.6rem;
  border-radius: 0;
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  box-shadow: 0 15px 30px rgba(10, 16, 47, 0.4);
  z-index: 20;
}

.toast.visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.dialog {
  position: fixed;
  inset: 0;
  background: rgba(11, 16, 33, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 1rem;
  z-index: 10;
}

.dialog.visible {
  opacity: 1;
  pointer-events: auto;
}

.dialog-card {
  background: #fff;
  border-radius: 0;
  padding: 2rem;
  max-width: 420px;
  width: 100%;
  position: relative;
  display: grid;
  gap: 1rem;
}

.dialog-card input {
  width: 100%;
  border: 1px solid rgba(27, 44, 71, 0.2);
  padding: 0.9rem 1rem;
  border-radius: 0;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

.dialog-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--muted);
}

@media (max-width: 800px) {
  .visual-panel {
    display: none;
  }
}