/*
========================================
Notion-Inspired Professional Theme
========================================
*/
:root {
    --bg-main: #191919;
    --bg-panel: #222222;
    --border-color-soft: #333333;
    --border-color-hard: #1F4068;
    --text-primary: #EAEAEA;
    --text-secondary: #888888;
    --accent-red: #1F4068;
    --accent-blue: #4A90E2;
    --accent-purple: #7C4DFF;
    --strength-weak: #e53935;
    --strength-medium: #fdd835;
    --strength-strong: #43a047;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/*
========================================
Base & Layout
========================================
*/
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-main);
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

main {
    flex-grow: 1;
}

/*
========================================
Header
========================================
*/
.header {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color-soft);
    background-color: var(--bg-main);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

.header-nav a {
    color: #FF5722;
    text-decoration: none;
    margin-left: 1.5rem;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.header-nav a:hover {
    color: #FF5722;
}

/*
========================================
View Containers & Transitions
========================================
*/
.view {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}

.view.active {
    display: block;
}

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

/*
========================================
Mode Selection Screen
========================================
*/
#view-mode-selection {
    padding-top: 3rem;
}

#view-mode-selection.active .mode-selection-wrapper {
    background-image: linear-gradient(rgba(0, 0, 0, .30), rgba(5, 5, 5, .95)), url('https://w.wallhaven.cc/full/vq/wallhaven-vqwlwl.jpg');
    background-size: cover;
    background-position: center;
    padding-bottom: 3rem;
    border-bottom: 1px solid #4A90E2;
}

.mode-selection-container {
    text-align: center;
    padding: 5rem 0;
}

.mode-selection-container h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.mode-selection-container p {
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.mode-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    max-width: 700px;
    margin: 0 auto;
}

.mode-option {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color-soft);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

.mode-option:hover {
    background-color: #2a2a2a;
    transform: translateY(-2px);
}

.mode-option h3 {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.mode-option h3 svg {
    margin-right: 0.75rem;
    color: var(--accent-blue);
}

.mode-option p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    padding-left: 2.25rem;
}

/*
========================================
Education Section
========================================
*/
.education-section {
    margin-top: 1px;
    background-color: #000;
    padding: 2rem 0;
}

.education-section h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--accent-blue);
}

.education-section h3 {
    font-size: 1.2rem;
    font-weight: 500;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.education-section p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.education-section ul {
    list-style: disc;
    padding-left: 20px;
}

.education-section li {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    line-height: 1.7;
}

/*
========================================
Main Application Panel
========================================
*/
#view-app {
    padding: 3rem 0;
}

.app-panel {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.app-panel.with-preview {
    grid-template-columns: 2fr 1fr;
}

.form-container {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color-soft);
    border-radius: 8px;
    padding: 2rem;
    min-width: 0;
}

.form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.form-header h2 {
    font-size: 1.5rem;
    font-weight: 500;
}

.back-button {
    background: none;
    border: none;
    color: #FF5722;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    transition: color 0.2s;
}

.back-button:hover {
    color: #E43F5A;
}

.back-button svg {
    margin-right: 0.5rem;
}

/*
========================================
Form Elements & Image Preview
========================================
*/
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.input-field, .textarea-field {
    width: 100%;
    background-color: var(--bg-main);
    color: var(--text-primary);
    border: 1px solid var(--border-color-soft);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: var(--font-main);
    transition: border-color 0.2s ease;
}

.input-field:focus, .textarea-field:focus {
    outline: none;
    border-color: var(--border-color-hard);
}

.textarea-field {
    min-height: 150px;
    resize: vertical;
    max-height: 250px;
    overflow-y: auto;
}

.info-bar {
    display: none;
    justify-content: space-between;
    align-items: center;
    padding: 0 5px;
    margin-top: 8px;
    font-size: 0.9em;
    font-weight: 500;
    color: var(--accent-purple);
}

.file-upload-area {
    border: 2px dashed var(--border-color-soft);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.file-upload-area:hover {
    border-color: var(--border-color-hard);
    background-color: #1c1c1c;
}

.file-upload-area p {
    color: var(--text-secondary);
}

.file-upload-area input[type="file"] {
    display: none;
}

.image-preview-container {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color-soft);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.image-preview-container canvas {
    max-width: 100%;
    border-radius: 6px;
    border: 2px solid var(--border-color-hard);
}

.image-preview-container .file-info {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 1rem;
    text-align: center;
}

/*
========================================
Key Strength Indicator & Toggle
========================================
*/
.key-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.key-wrapper .input-field {
    padding-right: 40px;
}

.key-toggle-icon {
    position: absolute;
    right: 12px;
    cursor: pointer;
    user-select: none;
    color: var(--text-secondary);
}

.key-strength-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    height: 16px;
}

.strength-bar {
    display: flex;
    gap: 4px;
    flex-grow: 1;
}

.strength-bar span {
    height: 4px;
    width: 33.33%;
    background-color: var(--border-color-soft);
    border-radius: 2px;
    transition: background-color 0.3s ease;
}

.key-strength-indicator.weak .strength-bar span:nth-child(1) {
    background-color: var(--strength-weak);
}

.key-strength-indicator.medium .strength-bar span:nth-child(-n+2) {
    background-color: var(--strength-medium);
}

.key-strength-indicator.strong .strength-bar span {
    background-color: var(--strength-strong);
}

.strength-text {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.key-strength-indicator.weak .strength-text { color: var(--strength-weak); }
.key-strength-indicator.medium .strength-text { color: var(--strength-medium); }
.key-strength-indicator.strong .strength-text { color: var(--strength-strong); }


/*
========================================
Buttons & Results
========================================
*/
.form-buttons {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1rem;
    margin-top: 1rem;
}

.btn-submit, .btn-clear {
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease, opacity 0.2s ease;
}

.btn-submit {
    background-color: var(--accent-red);
    color: white;
}

.btn-submit:hover {
    background-color: #C1354E;
}

.btn-submit:disabled {
    background-color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.7;
}

.btn-clear {
    background-color: var(--border-color-soft);
    color: var(--text-primary);
}

.btn-clear:hover {
    background-color: #444;
}

.loading, .result {
    margin-top: 1.5rem;
    padding: 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    display: none;
}

.loading {
    text-align: center;
    color: var(--text-secondary);
}

.result {
    position: relative;
    border: 1px solid var(--border-color-soft);
}

.result pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    margin: 0;
    font-family: var(--font-main);
}

.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--bg-main);
    border: 1px solid var(--border-color-soft);
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 4px;
    padding: 4px;
    display: none; /* Hidden by default */
    transition: color 0.2s, background-color 0.2s;
}

.copy-btn:hover {
    background-color: var(--border-color-soft);
    color: var(--text-primary);
}

.result.success {
    background-color: rgba(74, 144, 226, 0.1);
    border-color: var(--accent-blue);
    color: var(--text-primary);
}

.result.error {
    background-color: rgba(228, 63, 90, 0.1);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

/*
========================================
Modal Styles
========================================
*/
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--bg-panel);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color-soft);
    max-width: 700px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.modal-overlay.visible .modal-content {
    transform: scale(1);
}

.modal-close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-content h2 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    border-bottom: 1px solid var(--border-color-soft);
    padding-bottom: 1rem;
}

.modal-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--accent-blue);
}

.modal-content p, .modal-content li {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.modal-content ul, .modal-content ol {
    padding-left: 1.5rem;
}

.modal-content code {
    background-color: var(--bg-main);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
}

/*
========================================
Landing Page & Main Footer
========================================
*/
.landing-page-footer {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color-soft);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.footer-section p, .footer-section li, .footer-section a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    text-decoration: none;
    list-style: none;
}

.footer-section a:hover {
    color: var(--text-primary);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

.social-links a:hover {
    color: var(--accent-red);
}

.main-footer {
    border-top: 1px solid var(--border-color-soft);
    padding: 2rem 0;
    margin-top: 4rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/*
========================================
Responsive Design
========================================
*/
@media (max-width: 900px) {
    .app-panel.with-preview {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .mode-options {
        grid-template-columns: 1fr;
    }
    .container {
        padding: 0 1rem;
    }
    .form-buttons {
        grid-template-columns: 1fr;
    }
}

/*
========================================
Custom Scrollbar Styling
========================================
*/
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-panel);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background-color: var(--border-color-soft);
    border-radius: 4px;
    border: 2px solid var(--bg-panel);
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-secondary);
}