/* ============================================================
   RUSLO.TOOLS — STYLES.CSS
   Login Page · B2B Platform for IT Agencies
   Architecture: Mobile-First, CSS Variables
   ============================================================ */

/* ── 1. CSS CUSTOM PROPERTIES ─────────────────────────────── */
:root {
  /* Colors */
  --color-bg:             #f8fafc;
  --color-bg-panel:       #ffffff;
  --color-bg-muted:       #f1f5f9;
  --color-border:         #e2e8f0;
  --color-border-dark:    #cbd5e1;

  --color-text-primary:   #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted:     #94a3b8;

  --color-accent:         #10b981;
  --color-accent-dark:    #059669;
  --color-accent-faint:   rgba(16, 185, 129, 0.1);

  --color-error:          #ef4444;
  --color-error-faint:    rgba(239, 68, 68, 0.08);

  /* Typography */
  --font-primary: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --text-xs:   0.6875rem; /* 11px */
  --text-sm:   0.8125rem; /* 13px */
  --text-base: 0.9375rem; /* 15px */
  --text-md:   1.0625rem; /* 17px */
  --text-lg:   1.25rem;   /* 20px */
  --text-xl:   1.5rem;    /* 24px */

  --weight-regular:  400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  /* Borders */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Grid */
  --grid-pattern-size: 40px;
}


/* ── 2. RESET ──────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
}

img, svg {
  display: block;
  max-width: 100%;
}


/* ── 3. BACKGROUND GRID ────────────────────────────────────── */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: var(--grid-pattern-size) var(--grid-pattern-size);
  opacity: 0.45;
}


/* ── 4. HEADER ─────────────────────────────────────────────── */
.site-header {
  position: relative;
  z-index: 10;
  height: 60px;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

.header-inner {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-6);
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.logo-mark {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.logo-name {
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  line-height: 1;
}

.logo-name span {
  color: var(--color-text-muted);
  font-weight: var(--weight-medium);
}

/* Back link */
.header-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.header-back:hover {
  color: var(--color-text-primary);
}

.header-back svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.header-back:hover svg {
  transform: translateX(-2px);
}


/* ── 5. MAIN WRAPPER ───────────────────────────────────────── */
.login-wrapper {
  flex: 1;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
}


/* ── 6. LOGIN CARD ─────────────────────────────────────────── */
.login-card {
  width: 100%;
  max-width: 420px;
  background-color: var(--color-bg-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-10) var(--space-8);
  box-shadow:
    0 1px 3px rgba(0, 0, 0, 0.04),
    0 4px 24px rgba(0, 0, 0, 0.06);
  animation: card-in 0.5s cubic-bezier(0.4, 0, 0.2, 1) both;
}

@keyframes card-in {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}


/* ── 7. CARD HEADER ────────────────────────────────────────── */
.login-header {
  margin-bottom: var(--space-8);
  text-align: center;
}

.login-logo-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: var(--space-6);
}

.login-logo-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background-color: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 2px 8px rgba(15, 23, 42, 0.2),
    0 0 0 1px rgba(15, 23, 42, 0.06);
}

.login-logo-icon svg {
  width: 30px;
  height: 30px;
}

.login-title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
  line-height: 1.2;
  margin-bottom: var(--space-2);
}

.login-subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}


/* ── 8. FORM ───────────────────────────────────────────────── */
.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  letter-spacing: 0.01em;
}

/* Password label row */
.password-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.forgot-link {
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.forgot-link:hover {
  color: var(--color-accent-dark);
}

/* Input wrapper for password visibility toggle */
.input-wrap {
  position: relative;
}

.form-input {
  width: 100%;
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  color: var(--color-text-primary);
  background-color: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  outline: none;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.input-wrap .form-input {
  padding-right: 2.75rem;
}

.form-input::placeholder {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.form-input:hover {
  border-color: var(--color-border-dark);
}

.form-input:focus {
  border-color: var(--color-accent);
  background-color: var(--color-bg-panel);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.12);
}

.form-input.is-error {
  border-color: var(--color-error);
  background-color: var(--color-bg-panel);
  box-shadow: 0 0 0 3px var(--color-error-faint);
}

/* Error message */
.form-error {
  display: none;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-error);
  margin-top: calc(-1 * var(--space-1));
}

.form-error.visible {
  display: block;
}

/* Password toggle button */
.toggle-password {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast);
  border-radius: var(--radius-sm);
}

.toggle-password:hover {
  color: var(--color-text-secondary);
}

.eye-icon {
  width: 16px;
  height: 16px;
}

.eye-icon.hidden {
  display: none;
}


/* ── 9. SUBMIT BUTTON ──────────────────────────────────────── */
.btn-submit {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.01em;
  color: #ffffff;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-6);
  cursor: pointer;
  transition:
    background var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  box-shadow:
    0 1px 4px rgba(0, 0, 0, 0.14),
    0 0 0 1px rgba(15, 23, 42, 0.08);
  margin-top: var(--space-2);
  overflow: hidden;
}

.btn-submit:hover:not(:disabled) {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
  transform: translateY(-1px);
}

.btn-submit:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12);
}

.btn-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.btn-submit-icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.btn-submit:hover:not(:disabled) .btn-submit-icon {
  transform: translateX(2px);
}

/* Spinner (hidden by default) */
.btn-spinner {
  display: none;
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: var(--radius-full);
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

.btn-spinner.visible {
  display: block;
}

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


/* ── 10. CARD DIVIDER ──────────────────────────────────────── */
.card-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-6) 0 var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.card-divider::before,
.card-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--color-border);
}


/* ── 11. SECONDARY BUTTON ──────────────────────────────────── */
.btn-secondary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  font-family: var(--font-primary);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-secondary);
  background-color: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-5);
  text-decoration: none;
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.btn-secondary svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-dark);
  background-color: var(--color-accent-faint);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.08);
}

.btn-secondary:hover svg:last-child {
  transform: translateX(2px);
}


/* ── 12. CARD FOOTER NOTE ──────────────────────────────────── */
.login-footer-note {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.login-footer-note p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.login-footer-note a {
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.login-footer-note a:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border-dark);
}

/* Status badge */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
  letter-spacing: 0.04em;
}

.status-dot {
  width: 5px;
  height: 5px;
  border-radius: var(--radius-full);
  background-color: var(--color-accent);
  flex-shrink: 0;
  animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.75); }
}


/* ── 13. PAGE FOOTER ───────────────────────────────────────── */
.page-footer {
  position: relative;
  z-index: 1;
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg);
}

.page-footer-inner {
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.page-footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.page-footer-copy a {
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.page-footer-copy a:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border-dark);
}

.page-footer-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.footer-dot {
  width: 3px;
  height: 3px;
  border-radius: var(--radius-full);
  background-color: var(--color-border-dark);
  flex-shrink: 0;
}

.footer-meta-link {
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.footer-meta-link:hover {
  color: var(--color-text-secondary);
  border-color: var(--color-border-dark);
}


/* ── 14. RESPONSIVE ────────────────────────────────────────── */
@media (max-width: 480px) {
  .login-card {
    padding: var(--space-8) var(--space-6);
    border-radius: var(--radius-md);
  }

  .login-wrapper {
    align-items: flex-start;
    padding-top: var(--space-8);
  }
}