/**
 * Mpalo Signup Design Framework
 * 
 * A trusting and welcoming design system for Mpalo's signup flows.
 * Built with warm, accessible colors and clear typography hierarchy.
 * Uses Radley for display/headings and Martel for body text.
 */

/* ========================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ======================================== */

:root {
  /* Color Palette - Trusting & Warm */
  --signup-bg-primary: #101017;           /* Deep dark background */
  --signup-bg-surface: transparent;       /* Card background - transparent for warmth */
  --signup-border-primary: #e2e8f0;       /* Warm cream border */
  --signup-border-hover: #a3b1c3;         /* Lighter cream on hover */
  --signup-text-primary: #c1c7f1;         /* Soft lavender text */
  --signup-text-secondary: #9ca3af;       /* Muted grey text */
  --signup-text-tertiary: #6b7280;        /* Subtle grey text */
  --signup-text-on-button: #1f2c1f;       /* Dark text on buttons */
  
  /* Accent Colors */
  --signup-accent-primary: #ABC4AB;        /* Soft sage green */
  --signup-accent-hover: #d8f1d9;         /* Light mint green */
  --signup-accent-secondary: #7eab7e;      /* Deeper sage */
  --signup-brand-primary: #516EE1;         /* Mpalo blue for links */
  --signup-brand-hover: #60B2E5;          /* Lighter blue hover */
  
  /* Status Colors */
  --signup-success: #10B981;              /* Success green */
  --signup-warning: #F59E0B;              /* Warning orange */
  --signup-error: #EF4444;                /* Error red */
  --signup-info: #3B82F6;                 /* Info blue */
  
  /* Surface Colors */
  --signup-input-bg: #ffffff;             /* Input background */
  --signup-input-border: #d1d5db;         /* Input border */
  --signup-input-focus: #516EE1;          /* Input focus color */
  
  /* Typography Scale - Based on Perfect Fourth (1.333) */
  --signup-font-display: 'Radley', serif;    /* Display & heading font */
  --signup-font-body: 'Martel', serif;       /* Body & caption font */
  --signup-font-mono: 'Radley', serif;       /* Monospace for numbers */
  
  /* Type Scale */
  --signup-text-xs: 0.75rem;     /* 12px */
  --signup-text-sm: 0.875rem;    /* 14px */
  --signup-text-base: 1rem;      /* 16px */
  --signup-text-lg: 1.125rem;    /* 18px */
  --signup-text-xl: 1.25rem;     /* 20px */
  --signup-text-2xl: 1.5rem;     /* 24px */
  --signup-text-3xl: 1.875rem;   /* 30px */
  --signup-text-4xl: 2.25rem;    /* 36px */
  --signup-text-5xl: 3rem;       /* 48px */
  
  /* Line Heights */
  --signup-leading-tight: 1.25;
  --signup-leading-snug: 1.375;
  --signup-leading-normal: 1.5;
  --signup-leading-relaxed: 1.625;
  --signup-leading-loose: 2;
  
  /* Spacing Scale - 4px baseline */
  --signup-space-1: 0.25rem;   /* 4px */
  --signup-space-2: 0.5rem;    /* 8px */
  --signup-space-3: 0.75rem;   /* 12px */
  --signup-space-4: 1rem;      /* 16px */
  --signup-space-5: 1.25rem;   /* 20px */
  --signup-space-6: 1.5rem;    /* 24px */
  --signup-space-8: 2rem;      /* 32px */
  --signup-space-10: 2.5rem;   /* 40px */
  --signup-space-12: 3rem;     /* 48px */
  --signup-space-16: 4rem;     /* 64px */
  --signup-space-20: 5rem;     /* 80px */
  --signup-space-24: 6rem;     /* 96px */
  
  /* Shadows */
  --signup-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --signup-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --signup-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* Transitions */
  --signup-transition-fast: 150ms ease-in-out;
  --signup-transition-base: 300ms ease-in-out;
  --signup-transition-slow: 500ms ease-in-out;
  
  /* Border Radius */
  --signup-radius-sm: 0.25rem;   /* 4px */
  --signup-radius-md: 0.375rem;  /* 6px */
  --signup-radius-lg: 0.5rem;    /* 8px */
  --signup-radius-xl: 0.75rem;   /* 12px */
}

/* ========================================
   BASE STYLES & RESET
   ======================================== */

* {
  box-sizing: border-box;
}

.signup-container {
  min-height: 100vh;
  background-color: var(--signup-bg-primary);
  font-family: var(--signup-font-body);
  color: var(--signup-text-primary);
  line-height: var(--signup-leading-normal);
}

.signup-container * {
  margin: 0;
  padding: 0;
}

/* ========================================
   TYPOGRAPHY SYSTEM
   ======================================== */

/* Display Text - Radley for impact */
.signup-display {
  font-family: var(--signup-font-display);
  font-size: var(--signup-text-5xl);
  line-height: var(--signup-leading-tight);
  font-weight: 400;
  margin-bottom: var(--signup-space-8);
  color: var(--signup-text-primary);
}

/* Headings - Radley for hierarchy */
.signup-heading-1 {
  font-family: var(--signup-font-display);
  font-size: var(--signup-text-4xl);
  line-height: var(--signup-leading-tight);
  font-weight: 400;
  margin-bottom: var(--signup-space-6);
  color: var(--signup-text-primary);
}

.signup-heading-2 {
  font-family: var(--signup-font-display);
  font-size: var(--signup-text-3xl);
  line-height: var(--signup-leading-tight);
  font-weight: 400;
  margin-bottom: var(--signup-space-5);
  color: var(--signup-text-primary);
}

.signup-heading-3 {
  font-family: var(--signup-font-display);
  font-size: var(--signup-text-2xl);
  line-height: var(--signup-leading-snug);
  font-weight: 400;
  margin-bottom: var(--signup-space-4);
  color: var(--signup-text-primary);
}

.signup-heading-4 {
  font-family: var(--signup-font-display);
  font-size: var(--signup-text-xl);
  line-height: var(--signup-leading-snug);
  font-weight: 400;
  margin-bottom: var(--signup-space-4);
  color: var(--signup-text-primary);
}

/* Body Text - Martel for readability */
.signup-body-large {
  font-family: var(--signup-font-body);
  font-size: var(--signup-text-lg);
  line-height: var(--signup-leading-relaxed);
  font-weight: 400;
  margin-bottom: var(--signup-space-6);
  color: var(--signup-text-primary);
}

.signup-body {
  font-family: var(--signup-font-body);
  font-size: var(--signup-text-base);
  line-height: var(--signup-leading-normal);
  font-weight: 400;
  margin-bottom: var(--signup-space-4);
  color: var(--signup-text-primary);
}

.signup-body-small {
  font-family: var(--signup-font-body);
  font-size: var(--signup-text-sm);
  line-height: var(--signup-leading-normal);
  font-weight: 400;
  margin-bottom: var(--signup-space-3);
  color: var(--signup-text-secondary);
}

.signup-caption {
  font-family: var(--signup-font-body);
  font-size: var(--signup-text-xs);
  line-height: var(--signup-leading-normal);
  font-weight: 400;
  color: var(--signup-text-tertiary);
}

/* Text Colors */
.signup-text-primary { color: var(--signup-text-primary); }
.signup-text-secondary { color: var(--signup-text-secondary); }
.signup-text-tertiary { color: var(--signup-text-tertiary); }
.signup-text-success { color: var(--signup-success); }
.signup-text-warning { color: var(--signup-warning); }
.signup-text-error { color: var(--signup-error); }
.signup-text-info { color: var(--signup-info); }

/* ========================================
   LAYOUT SYSTEM
   ======================================== */

.signup-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: var(--signup-space-4);
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 20;
}

.signup-logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: var(--signup-space-8);
}

.signup-logo {
  height: 4rem; /* 64px - equivalent to h-16 */
  width: auto;
  object-fit: contain;
}

.signup-card {
  width: 100%;
  max-width: 28rem; /* 448px - equivalent to max-w-md */
  background-color: var(--signup-bg-surface);
  border: 2px solid var(--signup-border-primary);
  border-radius: var(--signup-radius-lg);
  padding: var(--signup-space-8);
  box-shadow: var(--signup-shadow-lg);
  font-weight: 600;
}

/* ========================================
   RESPONSIVE LOGO SIZING
   ======================================== */

/* Mobile (default) - smaller logo */
.signup-logo {
  height: 4rem; /* 64px */
}

/* Tablet */
@media (min-width: 640px) {
  .signup-logo {
    height: 5rem; /* 80px */
  }
}

/* Desktop */
@media (min-width: 768px) {
  .signup-logo {
    height: 6rem; /* 96px */
  }
  
  .signup-layout {
    padding: var(--signup-space-6);
  }
  
  .signup-logo-container {
    margin-bottom: var(--signup-space-10);
  }
}

/* Large screens */
@media (min-width: 1024px) {
  .signup-logo {
    height: 8rem; /* 128px */
  }
  
  .signup-card {
    max-width: 32rem; /* 512px - slightly larger on desktop */
  }
}

/* ========================================
   FORM COMPONENTS
   ======================================== */

/* Form Structure */
.signup-form {
  display: flex;
  flex-direction: column;
  gap: var(--signup-space-6);
}

.signup-form-group {
  display: flex;
  flex-direction: column;
  gap: var(--signup-space-2);
  width: 100%;
  position: relative;
  box-sizing: border-box;
}

.signup-label {
  font-family: var(--signup-font-body);
  font-size: var(--signup-text-sm);
  font-weight: 400;
  color: var(--signup-text-secondary);
  display: block;
  width: 100%;
}

.signup-input {
  width: 100%;
  padding: var(--signup-space-2) var(--signup-space-3);
  font-size: var(--signup-text-base);
  font-family: var(--signup-font-body);
  background-color: var(--signup-input-bg);
  border: 1px solid var(--signup-input-border);
  border-radius: var(--signup-radius-md);
  color: #1a202c;
  transition: all var(--signup-transition-fast);
}

.signup-input:focus {
  outline: none;
  border-color: var(--signup-input-focus);
  box-shadow: 0 0 0 2px rgba(81, 110, 225, 0.1);
}

.signup-input::placeholder {
  color: var(--signup-text-tertiary);
}

/* Password Input Wrapper - Stable Approach with Proper SVG Anchoring */
.signup-password-wrapper {
  position: relative;
  width: 100%;
}

.signup-password-wrapper .signup-input {
  width: 100%;
  padding-right: 3rem;
}

.signup-password-toggle {
  position: absolute;
  top: 50%;
  right: var(--signup-space-3);
  transform: translateY(-50%);
  cursor: pointer;
  color: var(--signup-text-tertiary);
  transition: all var(--signup-transition-fast);
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  pointer-events: auto;
  /* Ensure the toggle is always aligned with the input field, not affected by error message positioning */
  margin-top: 0;
  margin-bottom: 0;
  /* Prevent any form submission or unwanted interactions */
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  /* Prevent focus changes that could trigger validation */
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.signup-password-toggle:hover {
  opacity: 0.7;
}

.signup-password-toggle img {
  width: 1.5rem;
  height: 1.5rem;
  opacity: 0.6;
  transition: opacity var(--signup-transition-fast);
}

.signup-password-toggle:hover img {
  opacity: 1;
}

/* ========================================
   BUTTON COMPONENTS
   ======================================== */

.signup-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--signup-space-2);
  padding: var(--signup-space-2) var(--signup-space-4);
  font-size: var(--signup-text-base);
  font-weight: 600;
  font-family: var(--signup-font-body);
  border-radius: var(--signup-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--signup-transition-base);
  width: 100%;
}

.signup-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Primary Button - Main CTA */
.signup-btn-primary {
  background-color: var(--signup-accent-primary);
  color: var(--signup-text-on-button);
  border-color: var(--signup-accent-primary);
}

.signup-btn-primary:hover:not(:disabled) {
  background-color: var(--signup-accent-hover);
  border-color: var(--signup-accent-hover);
}

.signup-btn-primary:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(171, 196, 171, 0.3);
}

/* Secondary Button - OAuth/Social */
.signup-btn-secondary {
  background-color: var(--signup-border-primary);
  color: var(--signup-text-on-button);
  border-color: var(--signup-border-primary);
}

.signup-btn-secondary:hover:not(:disabled) {
  background-color: var(--signup-border-hover);
  border-color: var(--signup-border-hover);
}

.signup-btn-secondary:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(233, 227, 215, 0.3);
}

/* Brand Button - For brand links - Softer blue */
.signup-btn-brand {
  background-color: var(--signup-text-secondary);
  color: white;
  border-color: var(--signup-text-secondary);
}

.signup-btn-brand:hover:not(:disabled) {
  background-color: var(--signup-text-tertiary);
  border-color: var(--signup-text-tertiary);
}

.signup-btn-brand:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(156, 163, 175, 0.3);
}

/* ========================================
   SPECIALIZED COMPONENTS
   ======================================== */

/* Divider */
.signup-divider {
  display: flex;
  align-items: center;
  margin: var(--signup-space-6) 0;
}

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

.signup-divider-text {
  padding: 0 var(--signup-space-4);
  font-size: var(--signup-text-sm);
  color: var(--signup-text-tertiary);
  font-family: var(--signup-font-body);
}

/* Code Input Grid (for verification codes) */
.signup-code-grid {
  display: flex;
  justify-content: center;
  gap: var(--signup-space-2);
  margin: var(--signup-space-6) 0;
}

.signup-code-input {
  width: 3rem;
  height: 3rem;
  text-align: center;
  font-size: var(--signup-text-xl);
  font-weight: 600;
  border: 1px solid var(--signup-input-border);
  border-radius: var(--signup-radius-md);
  background-color: var(--signup-input-bg);
  color: #1a202c;
  transition: all var(--signup-transition-fast);
}

.signup-code-input:focus {
  outline: none;
  border-color: var(--signup-input-focus);
  box-shadow: 0 0 0 2px rgba(81, 110, 225, 0.1);
}

/* Link Styles */
.signup-link {
  color: var(--signup-brand-primary);
  text-decoration: underline;
  transition: color var(--signup-transition-fast);
  font-family: inherit;
}

.signup-link:hover {
  color: var(--signup-brand-hover);
}

/* Alert/Message Components */
.signup-alert {
  padding: var(--signup-space-3) var(--signup-space-4);
  border-radius: var(--signup-radius-md);
  font-size: var(--signup-text-sm);
  font-family: var(--signup-font-body);
  margin-bottom: var(--signup-space-4);
}

.signup-alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--signup-success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.signup-alert-warning {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--signup-warning);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.signup-alert-error {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--signup-error);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.signup-alert-info {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--signup-info);
  border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Field Error Styling - Push Content Down Approach with SVG Protection */
.signup-field-error {
  display: block;
  width: 100%;
  margin-top: var(--signup-space-2);
  margin-bottom: 0;
  padding: 0;
  font-size: var(--signup-text-xs);
  line-height: var(--signup-leading-normal);
  font-family: var(--signup-font-body);
  color: var(--signup-error);
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: all var(--signup-transition-fast);
  box-sizing: border-box;
  position: static; /* Ensure error messages don't interfere with input positioning */
}

.signup-field-error:not(.signup-hidden) {
  opacity: 1;
  max-height: 3rem;
  margin-bottom: var(--signup-space-2);
}

/* Additional protection: Password toggle positioning states for when errors are present */
.signup-form-group.has-error .signup-password-toggle {
  /* When error messages are visible, maintain position relative to input field center */
  top: 50%;
  transform: translateY(-50%);
}

/* Input Error State */
.signup-input-error {
  border-color: var(--signup-error) !important;
  box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.1) !important;
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.signup-hidden { display: none !important; }
.signup-text-center { text-align: center; }
.signup-text-left { text-align: left; }
.signup-text-right { text-align: right; }

/* Spacing utilities */
.signup-mt-2 { margin-top: var(--signup-space-2); }
.signup-mt-4 { margin-top: var(--signup-space-4); }
.signup-mt-6 { margin-top: var(--signup-space-6); }
.signup-mb-2 { margin-bottom: var(--signup-space-2); }
.signup-mb-4 { margin-bottom: var(--signup-space-4); }
.signup-mb-6 { margin-bottom: var(--signup-space-6); }
.signup-mb-8 { margin-bottom: var(--signup-space-8); }

/* Display utilities */
.signup-flex { display: flex; }
.signup-flex-col { flex-direction: column; }
.signup-items-center { align-items: center; }
.signup-justify-center { justify-content: center; }
.signup-justify-between { justify-content: space-between; }
.signup-gap-2 { gap: var(--signup-space-2); }
.signup-gap-4 { gap: var(--signup-space-4); }

/* ========================================
   ACCESSIBILITY ENHANCEMENTS
   ======================================== */

/* Focus visible for keyboard navigation */
.signup-btn:focus-visible,
.signup-input:focus-visible,
.signup-link:focus-visible {
  outline: 2px solid var(--signup-input-focus);
  outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .signup-btn,
  .signup-input,
  .signup-link,
  .signup-password-toggle {
    transition: none;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --signup-text-primary: #ffffff;
    --signup-text-secondary: #e5e5e5;
    --signup-border-primary: #ffffff;
    --signup-input-border: #ffffff;
  }
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
  .signup-container {
    background-color: white;
    color: black;
  }
  
  .signup-btn,
  .signup-password-toggle {
    display: none;
  }
  
  .signup-card {
    border: 1px solid black;
    box-shadow: none;
  }
}