/* Custom styles for Random Passphrase Generator */

/* Root variables for consistent theming */
:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-active: #1d4ed8;
    --success-color: #10b981;
    --success-hover: #059669;
    --error-color: #dc2626;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --border-radius: 0.5rem;
    --border-radius-sm: 0.25rem;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --transition: all 0.2s ease;
}

/* Enhanced body and typography */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
}

/* Enhanced header styling */
header {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

header h1 {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    letter-spacing: -0.025em;
}

/* Enhanced form styling */
.form-container {
    background: #ffffff;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.form-container:hover {
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* Enhanced input styling */
input[type="text"],
input[type="number"] {
    transition: var(--transition);
    font-size: 1rem;
    line-height: 1.5;
}

input[type="text"]:focus,
input[type="number"]:focus {
    box-shadow: 0 0 0 3px rgb(59 130 246 / 0.1);
    transform: translateY(-1px);
}

/* Enhanced button styling */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    border: none;
    color: white;
    font-weight: 600;
    letter-spacing: 0.025em;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, #1e40af 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgb(59 130 246 / 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Enhanced template button styling */
.template-btn {
    transition: var(--transition);
    font-family: 'Courier New', Courier, monospace;
    font-weight: 600;
    border: 2px solid var(--gray-300);
    background: var(--gray-50);
    position: relative;
    overflow: hidden;
}

.template-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.5s;
}

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

.template-btn:hover {
    border-color: var(--primary-color);
    background: #dbeafe;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Enhanced password results styling */
.password-result {
    background: linear-gradient(135deg, var(--gray-50) 0%, #ffffff 100%);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', 'Courier New', Courier, monospace;
    font-size: 1.125rem;
    position: relative;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.password-result::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--success-color), var(--primary-color));
    opacity: 0;
    transition: var(--transition);
}

.password-result:hover {
    background: linear-gradient(135deg, var(--gray-100) 0%, #ffffff 100%);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

.password-result:hover::before {
    opacity: 1;
}

.password-text {
    word-break: break-all;
    margin-bottom: 0.75rem;
    color: var(--gray-900);
    font-weight: 700;
    font-size: 1.125rem;
    line-height: 1.4;
    letter-spacing: 0.025em;
    text-shadow: 0 1px 2px rgb(0 0 0 / 0.05);
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(59, 130, 246, 0.1);
}

.copy-button {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.copy-button:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-active) 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgb(59 130 246 / 0.3);
}

.copy-button:active {
    transform: translateY(0);
}

.copy-button.copied {
    background: linear-gradient(135deg, var(--success-color) 0%, var(--success-hover) 100%);
    animation: pulse 0.5s ease-in-out;
}

.copy-button.copied:hover {
    background: linear-gradient(135deg, var(--success-hover) 0%, #047857 100%);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Template button active state */
.template-btn.active {
    background-color: #dbeafe;
    border-color: #3b82f6;
    color: #1e40af;
}

/* Loading state for generate button */
.generate-btn-loading {
    opacity: 0.7;
    cursor: not-allowed;
}

.generate-btn-loading::after {
    content: '';
    display: inline-block;
    width: 1rem;
    height: 1rem;
    margin-left: 0.5rem;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Enhanced responsive design */
@media (max-width: 768px) {
    .password-result {
        font-size: 1rem;
        padding: 1rem;
    }
    
    .password-text {
        font-size: 1rem;
        margin-bottom: 1rem;
    }
    
    .copy-button {
        position: static;
        margin-top: 0.75rem;
        width: 100%;
        padding: 0.75rem;
        font-size: 0.875rem;
    }
    
    .template-btn {
        padding: 0.75rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .form-container {
        margin: 0.5rem;
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .password-result {
        padding: 0.75rem;
    }
    
    .password-text {
        font-size: 0.875rem;
    }
}

/* Enhanced focus states for accessibility */
.template-btn:focus,
.copy-button:focus,
input[type="text"]:focus,
input[type="number"]:focus,
button:focus {
    outline: 3px solid rgba(59, 130, 246, 0.5);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Enhanced success message styling */
.success-message {
    background: linear-gradient(135deg, #dcfce7 0%, #f0fdf4 100%);
    border: 2px solid #bbf7d0;
    color: #166534;
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    text-align: center;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    animation: slideInDown 0.3s ease-out;
}

/* Enhanced error message styling */
.error-message {
    background: linear-gradient(135deg, #fef2f2 0%, #fef7f7 100%);
    border: 2px solid #fecaca;
    color: var(--error-color);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    text-align: center;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    animation: slideInDown 0.3s ease-out;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Enhanced logo responsive sizing */
@media (max-width: 640px) {
    header img {
        height: 3rem;
        transition: var(--transition);
    }
    
    header h1 {
        font-size: 1.875rem;
        line-height: 1.2;
    }
    
    header p {
        font-size: 0.875rem;
    }
}

/* Additional modern enhancements */
.section-card {
    background: #ffffff;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    overflow: hidden;
}

.section-card:hover {
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    transform: translateY(-1px);
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection styling */
::selection {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--gray-900);
}

/* Loading animation enhancement */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Print styles */
@media print {
    .copy-button {
        display: none;
    }
    
    .password-result {
        border: 2px solid var(--gray-300);
        break-inside: avoid;
    }
}