/* ============================================
   CoinPulse Authentication Pages Styles
   Login, Signup, Forgot Password
   ============================================ */

/* ============================================
   1. CSS Variables (inherited from landing.css)
   ============================================ */
:root {
    /* Color Palette */
    --primary-color: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --secondary-color: #8b5cf6;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;

    /* Neutral Colors */
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #cbd5e1;
    --gray-lightest: #f1f5f9;
    --white: #ffffff;

    /* Gradient */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-dark: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Typography */
    --font-family: 'Inter', 'Trebuchet MS', Arial, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;

    /* Shadows */
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark);
    background: var(--gradient-dark);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
}

/* ============================================
   2. Background
   ============================================ */
.auth-background {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
    overflow: hidden;
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-dark);
    opacity: 0.95;
}

/* Animated background shapes (optional enhancement) */
.auth-background::before,
.auth-background::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(103, 126, 234, 0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

.auth-background::before {
    top: -200px;
    left: -200px;
    animation-delay: 0s;
}

.auth-background::after {
    bottom: -200px;
    right: -200px;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(50px, 50px) scale(1.1);
    }
}

/* ============================================
   3. Auth Container
   ============================================ */
.auth-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 450px;
    padding: var(--spacing-md);
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   4. Auth Card
   ============================================ */
.auth-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-xl);
}

/* ============================================
   5. Header
   ============================================ */
.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-header .logo {
    display: inline-block;
    font-size: var(--font-size-3xl);
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    margin-bottom: var(--spacing-sm);
}

.auth-header .tagline {
    color: var(--gray);
    font-size: var(--font-size-base);
    margin: 0;
}

/* ============================================
   6. Form Styles
   ============================================ */
.auth-form {
    margin-bottom: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"] {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--gray-light);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    transition: all var(--transition-base);
    background-color: var(--white);
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group input.error {
    border-color: var(--danger-color);
}

.form-group input.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Password Input Wrapper */
.password-input-wrapper {
    position: relative;
}

.password-input-wrapper input {
    padding-right: 45px;
}

.toggle-password {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray);
    cursor: pointer;
    padding: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
}

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

.toggle-password .eye-icon {
    width: 20px;
    height: 20px;
}

/* Error Message */
.error-message {
    display: block;
    color: var(--danger-color);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    min-height: 20px;
}

/* ============================================
   7. Form Options
   ============================================ */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    margin-right: var(--spacing-xs);
    cursor: pointer;
}

.checkbox-label span {
    font-size: var(--font-size-sm);
    color: var(--gray);
}

.forgot-link {
    font-size: var(--font-size-sm);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

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

/* ============================================
   8. Buttons
   ============================================ */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn-block {
    width: 100%;
}

/* Button Loader */
.btn-loader {
    display: inline-flex;
    align-items: center;
}

.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Social Buttons */
.btn-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--gray-light);
    border-radius: var(--radius-md);
    background-color: var(--white);
    color: var(--dark);
    font-size: var(--font-size-base);
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: var(--spacing-sm);
}

.btn-social:hover:not(:disabled) {
    border-color: var(--gray);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-social:last-child {
    margin-bottom: 0;
}

/* ============================================
   9. Form Message
   ============================================ */
.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    text-align: center;
    display: none;
}

.form-message.success {
    display: block;
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.form-message.error {
    display: block;
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

/* ============================================
   10. Divider
   ============================================ */
.divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-lg) 0;
    color: var(--gray);
    font-size: var(--font-size-sm);
}

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

.divider span {
    padding: 0 var(--spacing-md);
}

/* ============================================
   11. Social Login
   ============================================ */
.social-login {
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   12. Footer
   ============================================ */
.auth-footer {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-lightest);
}

.auth-footer p {
    color: var(--gray);
    font-size: var(--font-size-sm);
    margin: 0;
}

.auth-footer .link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.auth-footer .link:hover {
    color: var(--primary-dark);
}

/* ============================================
   13. Back to Home
   ============================================ */
.back-home {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.back-home:hover {
    color: rgba(255, 255, 255, 1);
    transform: translateX(-5px);
}

.back-home svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   14. Responsive Design
   ============================================ */
@media (max-width: 480px) {
    .auth-container {
        padding: var(--spacing-sm);
    }

    .auth-card {
        padding: var(--spacing-lg);
    }

    .auth-header .logo {
        font-size: var(--font-size-2xl);
    }

    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
}