/* ============================================================================
   EN1090tools - Digital Toolbox - Stylesheet
   Design: Industrial Dark (Chriwa-Style) - Dunkelblau/Grau + Cyan-Akzente
   ============================================================================ */

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

/* === DARK MODE (Default) - Chriwa Farben === */
:root, [data-theme="dark"] {
    /* Primaerfarben - Cyan/Tuerkis wie Chriwa Button */
    --primary-color: #00a8e8;
    --primary-hover: #0090c8;
    --primary-muted: #007bb5;
    --secondary-color: #6b7280;
    --success-color: #10b981;
    --error-color: #ef4444;
    --accent-color: #00a8e8;

    /* Hintergruende - Dunkelblau/Grau wie Chriwa */
    --bg-color: #1a2332;
    --bg-secondary: #232f3e;
    --surface-color: #2a3847;
    --surface-hover: #354555;

    /* Text */
    --text-primary: #e6edf3;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    /* Borders & Shadows */
    --border-color: #3d4f5f;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);

    /* Login Overlay */
    --login-bg: linear-gradient(135deg, #1a2332 0%, #232f3e 50%, #2a3847 100%);

    /* Cards */
    --card-bg: #2a3847;
    --card-border: #3d4f5f;
    --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

/* === LIGHT MODE === */
[data-theme="light"] {
    /* Primaerfarben */
    --primary-color: #0077b6;
    --primary-hover: #005f92;
    --primary-muted: #004a7c;
    --success-color: #10b981;
    --error-color: #ef4444;

    /* Hintergruende */
    --bg-color: #f0f3f5;
    --bg-secondary: #e2e8f0;
    --surface-color: #ffffff;
    --surface-hover: #f1f5f9;

    /* Text */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;

    /* Borders & Shadows */
    --border-color: #d0d7de;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);

    /* Login Overlay */
    --login-bg: linear-gradient(135deg, #2a3847 0%, #354555 50%, #3d4f5f 100%);

    /* Cards */
    --card-bg: #ffffff;
    --card-border: #d0d7de;
    --card-shadow: var(--shadow-md);
}

/* === Spacing & Radius === */
:root {
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
}

/* === Body === */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-color);
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ============================================================================
   LOGIN OVERLAY (2FA)
   ============================================================================ */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--login-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
}

.login-overlay.hidden {
    display: none;
}

.login-box {
    background: var(--surface-color);
    padding: 40px 50px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    text-align: center;
    max-width: 420px;
    width: 90%;
    border: 1px solid var(--border-color);
}

.login-logo {
    margin-bottom: 20px;
}

.login-logo img {
    max-width: 180px;
    height: auto;
}

.logo-placeholder {
    width: 180px;
    height: 90px;
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: var(--text-muted);
    font-size: 0.9em;
}

.login-box h2 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 1.5em;
}

.login-subtitle {
    color: var(--text-secondary);
    margin-bottom: 25px;
    font-size: 0.95em;
}

/* Login Form Labels */
.login-label {
    display: block;
    text-align: left;
    color: var(--text-secondary);
    font-size: 0.9em;
    margin-bottom: 6px;
    margin-top: 10px;
}

.login-box input[type="text"],
.login-box input[type="password"] {
    width: 100%;
    padding: 15px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1em;
    margin-bottom: 15px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.login-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 168, 232, 0.15);
}

.login-box input::placeholder {
    color: var(--text-muted);
}

.login-btn {
    width: 100%;
    padding: 15px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, background-color 0.2s;
    margin-top: 10px;
}

.login-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 168, 232, 0.3);
}

.login-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.login-error {
    color: var(--error-color);
    margin-top: 15px;
    font-size: 0.9em;
    display: none;
}

.login-error.show {
    display: block;
}

.login-success {
    color: var(--success-color);
    margin-top: 15px;
    font-size: 0.9em;
    display: none;
}

.login-success.show {
    display: block;
}

.login-step {
    display: none;
}

.login-step.active {
    display: block;
}

.code-input {
    letter-spacing: 10px;
    text-align: center;
    font-size: 1.5em !important;
    font-weight: bold;
}

.email-hint {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 20px;
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.back-link {
    margin-top: 15px;
    color: var(--text-secondary);
    font-size: 0.9em;
    cursor: pointer;
}

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

.security-badge {
    margin-top: 20px;
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    font-size: 0.85em;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.security-badge span {
    color: var(--success-color);
}

.login-footer {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85em;
    font-style: italic;
}

/* ============================================================================
   MAIN CONTENT
   ============================================================================ */
.main-content {
    display: none;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content.visible {
    display: flex;
}

/* === Header === */
header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo h1 span {
    color: var(--primary-color);
}

.logo .tagline {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-info span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* === Theme Toggle Button === */
.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3em;
    transition: all 0.3s ease;
    color: var(--text-secondary);
}

.theme-toggle:hover {
    border-color: var(--primary-color);
    background: var(--surface-hover);
    color: var(--primary-color);
}

/* Light Mode: Zeige Mond (fuer Wechsel zu Dark) */
[data-theme="light"] .theme-icon-light { display: none; }
[data-theme="light"] .theme-icon-dark { display: block; }

/* Dark Mode: Zeige Sonne (fuer Wechsel zu Light) */
[data-theme="dark"] .theme-icon-light { display: block; }
[data-theme="dark"] .theme-icon-dark { display: none; }

/* === Buttons === */
.btn-primary,
.btn-secondary,
.btn-success {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 15px rgba(0, 168, 232, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--surface-hover);
    border-color: var(--primary-color);
}

/* === Company Banner === */
.company-banner {
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
}

.company-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.logo-placeholder-small {
    width: 80px;
    height: 50px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.8em;
}

.company-details {
    flex: 1;
}

.company-details h2 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.company-details p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.cert-badge {
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 168, 232, 0.25);
    font-weight: 600;
}

.cert-label {
    display: block;
    font-size: 0.75rem;
    opacity: 0.9;
}

.cert-class {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
}

/* === Section Title === */
.section-title {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin: var(--spacing-xl) 0 var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
}

/* === Tools Grid === */
main.container {
    flex: 1;
    padding-bottom: var(--spacing-2xl);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    position: relative;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    border-color: var(--primary-color);
}

.tool-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75em;
    margin-bottom: var(--spacing-lg);
    color: white;
}

.tool-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.tool-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
}

.tool-iso {
    display: inline-block;
    background: var(--bg-secondary);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-color);
}

.tool-status {
    padding: 8px 12px;
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 0.85rem;
    font-weight: 500;
}

.tool-status.ready {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.tool-status.pending {
    background: rgba(107, 114, 128, 0.1);
    color: var(--text-secondary);
    border: 1px solid rgba(107, 114, 128, 0.3);
}

.settings-card {
    border-style: dashed;
}

.settings-card .tool-status {
    display: none;
}

/* === Locked Module Cards === */
.tool-card.locked {
    position: relative;
    opacity: 0.6;
}

.tool-card.locked::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(0,0,0,0.15) 100%);
    border-radius: var(--radius-xl);
    pointer-events: none;
}

.tool-card.locked:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    opacity: 0.8;
}

.tool-card.locked .tool-icon {
    filter: grayscale(50%);
}

.locked-overlay {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    background: var(--primary-color);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1em;
    color: white;
    box-shadow: var(--shadow-md);
}

.tool-status.locked {
    background: rgba(0, 168, 232, 0.1);
    color: var(--primary-color);
    border: 1px dashed var(--primary-color);
    font-weight: 600;
}

.tool-status.locked .lock-icon {
    margin-right: 6px;
}

/* === Coming Soon Cards === */
.tool-card.coming-soon:not(.locked) {
    opacity: 0.9;
}

.tool-card.coming-soon:not(.locked):hover {
    transform: translateY(-2px);
}

/* === Upgrade Modal === */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 10001;
}

.modal-overlay.active {
    display: flex;
}

.modal-box {
    background: var(--surface-color);
    padding: 40px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    text-align: center;
    max-width: 420px;
    width: 90%;
    position: relative;
    animation: modalSlideIn 0.3s ease;
    border: 1px solid var(--border-color);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    font-size: 1.4em;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--error-color);
    color: white;
}

.modal-icon {
    font-size: 3.5em;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.modal-box h2 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 1.4em;
}

.modal-module-name {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.1em;
    margin-bottom: 20px;
}

.modal-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 25px;
}

.modal-contact {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: var(--radius-lg);
    margin-bottom: 25px;
    border: 1px solid var(--border-color);
}

.modal-contact p {
    margin: 5px 0;
    color: var(--text-primary);
}

.modal-box .btn-primary {
    width: 100%;
    padding: 14px;
}

/* === Company Logo Image === */
.company-logo-img {
    width: 80px;
    height: 50px;
    object-fit: contain;
    border-radius: var(--radius-md);
}

/* === Footer === */
footer {
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) 0;
    text-align: center;
    color: var(--text-secondary);
    margin-top: auto;
}

footer .version {
    font-size: 0.8rem;
    margin-top: var(--spacing-sm);
    color: var(--text-muted);
}

/* ============================================================================
   SCREENSAVER
   ============================================================================ */
.screensaver {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a2332 0%, #232f3e 50%, #1a2332 100%);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 99999;
    cursor: pointer;
}

.screensaver.active {
    display: flex;
}

.screensaver-content {
    text-align: center;
    color: white;
}

.screensaver-text .quote {
    font-size: 1.8em;
    font-style: italic;
    line-height: 1.4;
    opacity: 0.9;
    animation: fadeInOut 4s ease-in-out infinite;
}

.screensaver-brand {
    margin-top: 60px;
    font-size: 1.3em;
    font-weight: 600;
    color: var(--primary-color);
    text-shadow: 0 0 20px rgba(0, 168, 232, 0.5);
}

.screensaver-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.9em;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .company-info {
        flex-direction: column;
        text-align: center;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .login-box {
        padding: 30px 25px;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.5rem;
    }

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