/* Professional Login Page Styles - Shared for Staff and Customer Login */
/* Designed for investor presentation - polished, modern, professional */

/* ==================== VARIABLES ==================== */
:root {
    /* Professional Color Palette */
    --primary-brand: #2E7D32;       /* Deep forest green */
    --secondary-brand: #4CAF50;     /* Veridian green */
    --accent-gold: #FFB300;         /* Professional gold accent */
    --accent-blue: #1976D2;         /* Trust blue */
    
    /* Sophisticated Gradients */
    --primary-gradient: linear-gradient(135deg, #2E7D32 0%, #4CAF50 100%);
    --accent-gradient: linear-gradient(135deg, #FFB300 0%, #FF8F00 100%);
    --surface-gradient: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    --dark-gradient: linear-gradient(135deg, #263238 0%, #37474f 100%);
    
    /* Professional Shadows */
    --shadow-subtle: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-medium: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-strong: 0 8px 32px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 20px rgba(76, 175, 80, 0.3);
    
    /* Typography Scale */
    --font-heading: 'Inter', 'Segoe UI', system-ui, sans-serif;
    --font-body: 'Inter', 'Segoe UI', system-ui, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing System */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    
    /* Animation Timing */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==================== GLOBAL STYLES ==================== */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-body);
    font-weight: var(--font-weight-normal);
    background: var(--surface-gradient);
    color: #2c3e50;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==================== LOGIN SECTION ==================== */
.login-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-gradient);
    position: relative;
    overflow: hidden;
    padding: var(--space-xl) var(--space-md);
}

/* Sophisticated background pattern */
.login-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(76, 175, 80, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(46, 125, 50, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(255, 179, 0, 0.02) 0%, transparent 50%);
    pointer-events: none;
}

/* ==================== LOGIN CARD ==================== */
.login-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-strong);
    max-width: 420px;
    width: 100%;
    overflow: hidden;
    position: relative;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

/* ==================== LOGIN HEADER ==================== */
.login-header {
    background: var(--primary-gradient);
    color: white;
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 3px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.login-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: headerShimmer 3s ease-in-out infinite;
}

@keyframes headerShimmer {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(180deg); }
}

.login-header h1 {
    font-family: var(--font-heading);
    font-size: 1.875rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-sm);
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
}

.login-header p {
    margin: 0;
    opacity: 0.95;
    font-size: 0.9375rem;
    font-weight: var(--font-weight-medium);
    position: relative;
    z-index: 1;
}

.login-header i {
    margin-right: var(--space-sm);
    font-size: 1.75rem;
    vertical-align: middle;
}

/* ==================== LOGIN BODY ==================== */
.login-body {
    padding: var(--space-xl) var(--space-lg);
    background: white;
}

/* ==================== FORM STYLES ==================== */
.form-label {
    color: #2c3e50;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-sm);
    font-size: 0.875rem;
    letter-spacing: 0.025em;
    display: block;
}

.form-label .text-danger {
    color: #e74c3c;
    margin-left: var(--space-xs);
}

.form-control {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    color: #2c3e50;
    border-radius: var(--radius-md);
    padding: 0.875rem 1.125rem;
    font-size: 0.9375rem;
    font-weight: var(--font-weight-medium);
    transition: all var(--transition-normal);
    width: 100%;
    box-shadow: var(--shadow-subtle);
}

.form-control:focus {
    background: white;
    border-color: var(--secondary-brand);
    box-shadow: 0 0 0 4px rgba(76, 175, 80, 0.15);
    color: #2c3e50;
    outline: none;
    transform: translateY(-1px);
}

.form-control::placeholder {
    color: #6c757d;
    opacity: 0.7;
    font-weight: var(--font-weight-normal);
}

.form-control.is-invalid {
    border-color: #e74c3c;
    box-shadow: 0 0 0 4px rgba(231, 76, 60, 0.15);
}

/* ==================== BUTTON STYLES ==================== */
.btn-login {
    background: var(--primary-gradient);
    border: none;
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    font-size: 1rem;
    transition: all var(--transition-normal);
    width: 100%;
    box-shadow: var(--shadow-medium);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn-login:hover::before {
    left: 100%;
}

.btn-login:hover {
    background: var(--dark-gradient);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    color: white;
}

.btn-login:active {
    transform: translateY(0);
    box-shadow: var(--shadow-medium);
}

.btn-login i {
    margin-right: var(--space-sm);
    font-size: 1.125rem;
}

/* ==================== CHECKBOX STYLES ==================== */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin: var(--space-lg) 0;
}

.form-check-input {
    width: 1.125rem;
    height: 1.125rem;
    background-color: #f8f9fa;
    border: 2px solid #dee2e6;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.form-check-input:focus {
    border-color: var(--secondary-brand);
    box-shadow: 0 0 0 4px rgba(76, 175, 80, 0.15);
    outline: none;
}

.form-check-input:checked {
    background-color: var(--secondary-brand);
    border-color: var(--secondary-brand);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='3' d='m6 10 3 3 6-6'/%3e%3c/svg%3e");
}

.form-check-label {
    color: #495057;
    font-weight: var(--font-weight-medium);
    font-size: 0.875rem;
    cursor: pointer;
    user-select: none;
}

/* ==================== ALERT STYLES ==================== */
.alert {
    border-radius: var(--radius-md);
    border: none;
    padding: 1rem 1.25rem;
    margin-bottom: var(--space-lg);
    font-weight: var(--font-weight-medium);
    box-shadow: var(--shadow-subtle);
}

.alert-danger {
    background: linear-gradient(135deg, #fee, #fdd);
    color: #c53030;
    border-left: 4px solid #e53e3e;
}

.alert-success {
    background: linear-gradient(135deg, #f0fff4, #e6fffa);
    color: #2f855a;
    border-left: 4px solid #38a169;
}

.alert-warning {
    background: linear-gradient(135deg, #fffbeb, #fef5e7);
    color: #c05621;
    border-left: 4px solid #dd6b20;
}

.alert-info {
    background: linear-gradient(135deg, #ebf8ff, #e6f3ff);
    color: #2c5aa0;
    border-left: 4px solid #4299e1;
}

.alert i {
    margin-right: var(--space-sm);
    font-size: 1.125rem;
}

/* ==================== FOOTER STYLES ==================== */
.customer-options {
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 2px solid #f1f3f4;
}

.customer-options .row a {
    color: var(--secondary-brand);
    text-decoration: none;
    font-size: 0.8125rem;
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-fast);
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    display: inline-block;
}

.customer-options .row a:hover {
    color: var(--primary-brand);
    background: rgba(76, 175, 80, 0.1);
    transform: translateY(-1px);
}

.login-footer {
    text-align: center;
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 2px solid #f1f3f4;
}

.login-footer a {
    color: var(--secondary-brand);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-fast);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    display: inline-block;
    margin: 0 var(--space-xs);
}

.login-footer a:hover {
    color: var(--primary-brand);
    background: rgba(76, 175, 80, 0.1);
    transform: translateY(-1px);
}

.login-footer .mx-2 {
    color: #dee2e6;
    font-weight: var(--font-weight-light);
}

/* ==================== RESPONSIVE DESIGN ==================== */
@media (max-width: 768px) {
    .login-section {
        padding: var(--space-lg) var(--space-md);
        min-height: calc(100vh - 80px);
    }
    
    .login-card {
        margin: 0;
        max-width: 100%;
    }
    
    .login-header {
        padding: var(--space-lg) var(--space-md);
    }
    
    .login-header h1 {
        font-size: 1.625rem;
    }
    
    .login-body {
        padding: var(--space-lg) var(--space-md);
    }
    
    .customer-options .row {
        text-align: center;
    }
    
    .customer-options .row .col-6 {
        margin-bottom: var(--space-sm);
    }
}

@media (max-width: 480px) {
    .login-header {
        padding: var(--space-md);
    }
    
    .login-header h1 {
        font-size: 1.5rem;
    }
    
    .login-header i {
        font-size: 1.5rem;
    }
    
    .login-body {
        padding: var(--space-md);
    }
    
    .btn-login {
        padding: 0.875rem 1.5rem;
        font-size: 0.9375rem;
    }
    
    .login-footer a {
        display: block;
        margin: var(--space-xs) 0;
    }
    
    .login-footer .mx-2 {
        display: none;
    }
}

/* ==================== ACCESSIBILITY ==================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .login-header::before {
        animation: none;
    }
    
    .btn-login::before {
        transition: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .form-control {
        border-width: 3px;
    }
    
    .form-control:focus {
        border-width: 3px;
        box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.5);
    }
    
    .btn-login {
        border: 2px solid #2E7D32;
    }
}

/* ==================== LOADING STATES ==================== */
.btn-login.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-login.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    margin: auto;
    border: 2px solid transparent;
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ==================== PROFESSIONAL ENHANCEMENTS ==================== */
/* Focus ring for better accessibility */
.login-card:focus-within {
    box-shadow: var(--shadow-strong), 0 0 0 4px rgba(76, 175, 80, 0.1);
}

/* Subtle hover effect for the entire card */
.login-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
    transition: all var(--transition-normal);
}

/* Professional typography improvements */
.login-header h1,
.login-header p,
.form-label,
.btn-login {
    text-rendering: optimizeLegibility;
}

/* Better form field spacing */
.mb-3 {
    margin-bottom: var(--space-lg);
}

.mb-3:last-child {
    margin-bottom: 0;
}

/* Enhanced visual hierarchy */
.login-body > *:first-child {
    margin-top: 0;
}

.login-body > *:last-child {
    margin-bottom: 0;
}