@import url('https://fonts.googleapis.com/css2?family=Rubik:wght@300;400;500;600;700;800&display=swap');

:root {
  --blue-deep:  #1a3a6b;
  --blue-mid:   #2563c4;
  --blue-light: #4a90e2;
  --blue-bg:    #e8f0fb;
  --white:      #ffffff;
  --gray-light: #f5f7fa;
  --gray-border:#dde3ef;
  --ink:        #1a2540;
  --ink2:       #6b7a99;
  --error:      #d63b2f;
  --success:    #1a9e6e;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }

body {
  font-family: 'Rubik', sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1a3a6b 0%, #2563c4 50%, #4a90e2 100%);
  padding: 24px;
  position: relative;
  overflow: hidden;
}

/* subtle pattern overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle at 20% 80%, rgba(255,255,255,0.06) 0%, transparent 50%),
                    radial-gradient(circle at 80% 20%, rgba(255,255,255,0.04) 0%, transparent 50%);
  pointer-events: none;
}

/* Card */
.card {
  background: var(--white);
  border-radius: 20px;
  padding: 48px 44px 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 20px 60px rgba(26,58,107,0.35), 0 4px 16px rgba(26,58,107,0.15);
  position: relative;
  animation: cardIn 0.5s cubic-bezier(0.16,1,0.3,1) both;
}

@keyframes cardIn {
  from { opacity:0; transform: translateY(20px) scale(0.98); }
  to   { opacity:1; transform: translateY(0) scale(1); }
}

/* Logo */
.logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 32px;
  text-align: center;
}

.logo-mark {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue-mid));
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-family: 'Rubik', sans-serif;
  font-weight: 800;
  font-size: 22px;
  color: #fff;
  margin-bottom: 16px;
  box-shadow: 0 8px 24px rgba(37,99,196,0.35);
  letter-spacing: -1px;
}

.logo-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.5px;
}

.logo-sub {
  font-size: 13px;
  color: var(--ink2);
  font-weight: 400;
  margin-top: 3px;
}

/* Heading */
h1 {
  font-size: 26px;
  font-weight: 700;
  color: var(--ink);
  text-align: center;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
}

.subtitle {
  font-size: 14px;
  color: var(--ink2);
  text-align: center;
  margin-bottom: 32px;
  font-weight: 400;
  line-height: 1.5;
}

/* Alert */
.alert {
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 20px;
  display: none;
  align-items: center;
  gap: 8px;
}
.alert.error   { background:#fef2f2; border:1px solid #fecaca; color:var(--error);   display:flex; }
.alert.success { background:#f0fdf4; border:1px solid #bbf7d0; color:var(--success); display:flex; }

/* Fields */
.field { margin-bottom: 18px; }

label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
  text-align: right;
}

.input-wrap { position: relative; }

.input-wrap svg {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink2);
  opacity: 0.45;
  pointer-events: none;
  transition: opacity 0.2s, color 0.2s;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 13px 44px 13px 16px;
  background: var(--gray-light);
  border: 1.5px solid var(--gray-border);
  border-radius: 10px;
  color: var(--ink);
  font-size: 15px;
  font-family: 'Rubik', sans-serif;
  outline: none;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  direction: ltr;
  text-align: right;
}

input:focus {
  border-color: var(--blue-mid);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(37,99,196,0.12);
}

input:focus + svg { opacity: 1; color: var(--blue-mid); }

/* Row */
.row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.remember {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink2);
  cursor: pointer;
}

.remember input[type="checkbox"] {
  width: 15px; height: 15px;
  accent-color: var(--blue-mid);
  cursor: pointer;
}

.forgot {
  font-size: 13px;
  color: var(--blue-mid);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.15s;
}
.forgot:hover { color: var(--blue-deep); }

/* Button */
.btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--blue-deep), var(--blue-mid));
  border: none;
  border-radius: 10px;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  font-family: 'Rubik', sans-serif;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, opacity 0.2s;
  box-shadow: 0 4px 16px rgba(37,99,196,0.4);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.2px;
}

.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(37,99,196,0.45); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.btn-text { transition: opacity 0.2s; }
.btn.loading .btn-text { opacity: 0; }

.spinner { position: absolute; inset: 0; display: none; align-items: center; justify-content: center; }
.btn.loading .spinner { display: flex; }
.spinner svg { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Footer */
.card-footer {
  margin-top: 24px;
  text-align: center;
  font-size: 12px;
  color: var(--ink2);
  font-weight: 400;
}

.card-footer strong {
  color: var(--ink);
  font-weight: 600;
}