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

/* CSS Variables for easier theme management */
:root {
    --primary-color: #4f6ef7;
    --primary-dark-color: #3f5bd4;
    --secondary-color: #ffb347; /* For register button hover */
    --background-gradient-start: #4f6ef7;
    --background-gradient-end: #6ac1ff;
    --card-background-color: #fff;
    --text-color-dark: #111827;
    --text-color-medium: #6b7280;
    --text-color-light: #555;
    --border-color: #d1d5db;
    --input-bg-color: #f9fafb;
    --focus-shadow-color: rgba(79,110,247,0.15);
    --button-shadow-color: rgba(79, 110, 247, 0.3);
    --button-hover-shadow-color: rgba(79, 110, 247, 0.4);
    --error-bg-color: #ffe6e6;
    --error-text-color: #d9534f;
    --google-border-color: #dadce0;
    --google-hover-bg: #f8f9fa;
    --google-hover-border: #c1c7cd;
    --google-active-bg: #f1f3f4;
    --google-active-border: #9aa0a6;
    --google-text-color: #3c4043;
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;
    --transition-speed: 0.2s;
}

body {
    font-family: 'Inter', 'Segoe UI', Roboto, Arial, sans-serif; /* Modern font stack */
    background: linear-gradient(135deg, var(--background-gradient-start), var(--background-gradient-end));
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: var(--text-color-dark);
}

/* Auth Page Layout (from inline styles) */
.auth-page {
    display: grid;
    place-items: center;
    padding: 40px 16px;
    flex-grow: 1; /* Allow it to take available space */
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--card-background-color);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 12px 30px rgba(17,24,39,0.08);
    padding: 28px;
}

.auth-title {
    margin: 0 0 6px;
    font-size: 26px;
    font-weight: 800;
    color: var(--text-color-dark);
    text-align: center; /* Center align title */
}

.auth-subtitle {
    margin: 0 0 18px;
    color: var(--text-color-medium);
    text-align: center; /* Center align subtitle */
}

/* Form elements */
.input-group {
    margin-bottom: 14px;
}

.input-group label {
    display: block;
    margin: 0 0 6px;
    font-weight: 600;
    color: var(--text-color-light);
}

.form-control {
    width: 100%;
    padding: 12px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background: var(--input-bg-color);
    outline: none;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
    font-size: 16px; /* Ensure consistent font size */
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--focus-shadow-color);
    background: var(--card-background-color);
}

/* Password toggle styling (from inline styles) */
.password-container {
    position: relative;
    display: block; /* Changed to block for full width */
    width: 100%;
}

.password-toggle {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 16px;
    color: var(--text-color-medium);
    padding: 5px;
    z-index: 10;
}

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

.remember-me {
    display: flex;
    align-items: center;
    margin: 15px 0;
    gap: 8px;
}

.remember-me input[type="checkbox"] {
    width: auto;
    margin: 0;
    accent-color: var(--primary-color); /* Style checkbox */
}

.remember-me label {
    margin: 0;
    font-weight: normal;
    cursor: pointer;
    color: var(--text-color-light);
}

/* Buttons */
.btn {
    padding: 12px 16px;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-weight: 700;
    font-size: 16px;
    transition: background var(--transition-speed), transform 0.1s ease, box-shadow var(--transition-speed);
}

.btn.primary {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 4px 12px var(--button-shadow-color);
}

.btn.primary:hover {
    background: var(--primary-dark-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--button-hover-shadow-color);
}

.btn.primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px var(--button-shadow-color);
}

.btn-block {
    width: 100%;
}

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin: 10px 0 14px;
    flex-wrap: wrap; /* Allow wrapping on smaller screens */
}

.link-muted {
    font-size: 14px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.link-muted:hover {
    text-decoration: underline;
    color: var(--primary-dark-color);
}

/* OAuth Section Styling (from inline styles) */
.oauth-section {
    margin-top: 20px; /* Adjusted margin */
}

.oauth-divider {
    display: flex;
    align-items: center;
    color: var(--text-color-dark); /* Make text darker */
    font-size: 14px; /* Slightly larger font size */
    font-weight: 600; /* Make text bolder */
    margin: 20px 0; /* Adjusted margin */
}

.oauth-divider::before, .oauth-divider::after {
    content: "";
    flex: 1;
    height: 2px; /* Thicker line */
    background: var(--border-color); /* Use a variable for consistency, slightly darker */
}

.oauth-divider span {
    padding: 0 10px;
    background: var(--card-background-color); /* Ensure background matches card */
}

/* Google Sign-in Button (from inline styles) */
.google-signin-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 12px 20px;
    background: var(--card-background-color);
    border: 2px solid var(--google-border-color);
    border-radius: var(--border-radius-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--google-text-color);
    text-decoration: none;
    transition: all var(--transition-speed) ease;
    margin-bottom: 15px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.google-signin-btn:hover {
    background: var(--google-hover-bg);
    border-color: var(--google-hover-border);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    color: var(--google-text-color);
    text-decoration: none;
    transform: translateY(-1px);
}

.google-signin-btn:active {
    background: var(--google-active-bg);
    border-color: var(--google-active-border);
    transform: translateY(0);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.google-icon {
    width: 20px;
    height: 20px;
    margin-right: 12px;
    background: url('data:image/svg+xml;base64,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') no-repeat center;
    background-size: contain;
    flex-shrink: 0;
}

.google-signin-btn span {
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* Signup text and link (from inline styles) */
p.signup-text {
    margin-top: 25px; /* Adjusted margin */
    font-size: 14px;
    color: var(--text-color-light);
    text-align: center;
    line-height: 1.6;
}

p.signup-text a {
    display: inline-block;
    margin-top: 10px; /* Adjusted margin */
    padding: 8px 14px;
    background: var(--primary-color);
    color: #fff;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: background var(--transition-speed) ease, transform 0.1s ease;
}

p.signup-text a:hover {
    color: white;
    text-decoration: none;
    background: var(--secondary-color); /* Use secondary color for hover */
    transform: translateY(-2px);
}

p.signup-text a:active {
    transform: translateY(0);
}

/* Popup styling (from inline styles) */
.popup {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0; top: 0; width: 100vw; height: 100vh;
    background: rgba(0,0,0,0.3);
    justify-content: center; align-items: center;
}
.popup-content {
    background: #fff; padding: 30px 40px; border-radius: 10px; box-shadow: 0 2px 20px rgba(0,0,0,0.1); text-align: center;
}
.popup-content button {
    margin-top: 20px;
    padding: 10px 25px; /* Slightly larger button */
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: background var(--transition-speed) ease;
}
.popup-content button:hover {
    background: var(--primary-dark-color);
}

/* Error message (from inline styles, refined) */
.error-message { /* Changed from p[style*="color:red"] for better maintainability */
    background: var(--error-bg-color);
    color: var(--error-text-color);
    padding: 10px 15px; /* Adjusted padding */
    border-radius: var(--border-radius-sm);
    margin-bottom: 15px; /* Adjusted margin */
    font-size: 14px;
    text-align: center;
    border: 1px solid var(--error-text-color); /* Added border for emphasis */
}


/* Responsive */
@media (max-width: 768px) {
    .auth-card {
        margin: 30px 20px;
        padding: 25px 20px;
        max-width: none;
        width: calc(100% - 40px);
    }

    .auth-title {
        font-size: 24px;
    }

    .form-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .remember-me {
        margin: 0;
    }
}

@media (max-width: 480px) {
    .auth-card {
        margin: 20px 15px;
        padding: 20px 15px;
        width: calc(100% - 30px);
    }
    
    .form-control, .btn, .google-signin-btn, .popup-content button {
        padding: 14px;
        font-size: 16px; /* Prevents zoom on iOS */
    }
}
/* OAuth section container */
.oauth-section {
  text-align: center;
  margin-top: 24px;
}

/* Divider line with text */
.oauth-divider {
  position: relative;
  text-align: center;
  margin: 20px 0;
  font-size: 14px;
  color: #6b7280;
}
.oauth-divider span {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.oauth-divider::before,
.oauth-divider::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 35%;
  height: 1px;
  background: #e5e7eb;
}

.oauth-divider::before {
  left: 0;
}

.oauth-divider::after {
  right: 0;
}

/* Google button styling */
.google-signin-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #ffffff;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 10px 16px;
  color: #374151;
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  transition: all 0.25s ease;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.04);
}

.google-signin-btn:hover {
  background: #f9fafb;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.06);
  transform: translateY(-1px);
}

/* Google icon (SVG) */
.google-signin-btn svg {
  width: 20px;
  height: 20px;
  display: block;
}

/* Signup text below */
.signup-text {
  text-align: center;
  font-size: 14px;
  color: #6b7280;
  margin-top: 20px;
  line-height: 1.5;
}

.signup-text a {
  color: #4f46e5;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.25s ease;
}

.signup-text a:hover {
  color: #3730a3;
}