/**
 * NexoFusionX v2 - Installer Styles
 * Dark-Theme mit blauem Neon-Akzent, Partikel-Hintergrund
 */

/* ========================================================================== */
/* RESET + BASE                                                               */
/* ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #1F6FFF;
    --primary-hover: #1554D6;
    --primary-glow: rgba(31, 111, 255, 0.4);
    --surface: #121826;
    --surface-elevated: #1A2235;
    --background: #0A0E1A;
    --success: #1ED760;
    --warning: #FFB020;
    --danger: #FF3B3B;
    --text: #FFFFFF;
    --text-secondary: #8A94A6;
    --text-tertiary: #5A6478;
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(31, 111, 255, 0.3);

    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px var(--primary-glow);

    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
}

html, body {
    height: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ========================================================================== */
/* PARTICLE BACKGROUND                                                        */
/* ========================================================================== */
.installer-bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: radial-gradient(ellipse at top, rgba(31, 111, 255, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at bottom, rgba(30, 215, 96, 0.08) 0%, transparent 50%),
                var(--background);
}

.particles {
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(2px 2px at 15% 25%, var(--primary) 0%, transparent 50%),
        radial-gradient(1px 1px at 85% 75%, rgba(255, 255, 255, 0.3) 0%, transparent 50%),
        radial-gradient(1px 1px at 45% 85%, var(--primary) 0%, transparent 50%),
        radial-gradient(2px 2px at 75% 15%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
        radial-gradient(1px 1px at 25% 65%, var(--primary) 0%, transparent 50%);
    background-size: 600px 600px;
    animation: particles-drift 40s linear infinite;
    opacity: 0.6;
}

@keyframes particles-drift {
    0%   { transform: translate(0, 0); }
    50%  { transform: translate(-50px, -30px); }
    100% { transform: translate(0, 0); }
}

/* ========================================================================== */
/* LAYOUT                                                                     */
/* ========================================================================== */
.installer-wrapper {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.installer-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo-icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 12px var(--primary-glow));
    animation: logo-pulse 3s ease-in-out infinite;
}

@keyframes logo-pulse {
    0%, 100% { filter: drop-shadow(0 0 12px var(--primary-glow)); }
    50%      { filter: drop-shadow(0 0 20px var(--primary-glow)) brightness(1.2); }
}

.logo-text {
    background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-version {
    font-size: 0.875rem;
    color: var(--primary);
    background: rgba(31, 111, 255, 0.15);
    padding: 0.125rem 0.5rem;
    border-radius: 999px;
    font-weight: 600;
}

.installer-subtitle {
    color: var(--text-secondary);
    margin-top: 0.5rem;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ========================================================================== */
/* STEP NAVIGATION                                                            */
/* ========================================================================== */
.step-nav {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 3rem;
    padding: 0 1rem;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    flex: 0 0 auto;
    position: relative;
    z-index: 2;
}

.step-circle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--surface);
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.3s ease;
}

.step-icon {
    font-size: 1.25rem;
    opacity: 0.5;
    transition: opacity 0.3s ease;
}

.step-number {
    position: absolute;
    bottom: -4px;
    right: -4px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-weight: 600;
}

.step.completed .step-circle {
    background: rgba(30, 215, 96, 0.15);
    border-color: var(--success);
}
.step.completed .step-icon {
    opacity: 1;
}
.step.completed .step-number {
    background: var(--success);
    color: #000;
    border-color: var(--success);
}

.step.active .step-circle {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    animation: step-active-pulse 2s ease-in-out infinite;
}
.step.active .step-icon {
    opacity: 1;
}
.step.active .step-number {
    background: var(--text);
    color: var(--primary);
    border-color: var(--text);
}

@keyframes step-active-pulse {
    0%, 100% { box-shadow: 0 0 0 0 var(--primary-glow); }
    50%      { box-shadow: 0 0 0 8px transparent; }
}

.step-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-align: center;
    max-width: 80px;
    transition: color 0.3s ease;
}
.step.completed .step-label { color: var(--success); }
.step.active .step-label    { color: var(--text); font-weight: 600; }

.step-connector {
    flex: 1;
    height: 2px;
    background: var(--border);
    margin-top: 22px;
    transition: background 0.3s ease;
}
.step-connector.completed { background: var(--success); }

/* ========================================================================== */
/* MAIN CONTENT                                                               */
/* ========================================================================== */
.installer-main {
    flex: 1;
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 2.5rem;
    animation: content-fade-in 0.5s ease-out;
}

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

.step-content h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.step-intro {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* ========================================================================== */
/* WELCOME (STEP 1)                                                           */
/* ========================================================================== */
.welcome-hero {
    text-align: center;
    padding: 2rem 0;
    margin-bottom: 2rem;
}

.welcome-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 24px var(--primary-glow));
    animation: logo-pulse 3s ease-in-out infinite;
}

.welcome-hero h1 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.welcome-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.welcome-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--surface-elevated);
    padding: 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: all 0.2s ease;
}
.feature:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 1.75rem;
    flex-shrink: 0;
}

.feature-text {
    display: flex;
    flex-direction: column;
}
.feature-text strong {
    font-size: 0.95rem;
}
.feature-text span {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.welcome-info {
    background: rgba(31, 111, 255, 0.08);
    border: 1px solid rgba(31, 111, 255, 0.2);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    margin-bottom: 2rem;
}
.welcome-info p { margin-bottom: 0.5rem; font-weight: 600; }
.welcome-info ul { padding-left: 1.25rem; color: var(--text-secondary); }
.welcome-info li { margin-bottom: 0.25rem; }

/* ========================================================================== */
/* CHECKS (STEP 2)                                                            */
/* ========================================================================== */
.checks-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.check-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.875rem 1rem;
    background: var(--surface-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}
.check-row.ok   { border-left: 3px solid var(--success); }
.check-row.fail { border-left: 3px solid var(--danger); }
.check-row.warn { border-left: 3px solid var(--warning); }

.check-icon {
    font-size: 1.25rem;
    font-weight: 700;
    width: 24px;
    text-align: center;
}
.check-row.ok   .check-icon { color: var(--success); }
.check-row.fail .check-icon { color: var(--danger); }
.check-row.warn .check-icon { color: var(--warning); }

.check-label { flex: 1; font-weight: 500; }
.check-status { color: var(--text-secondary); font-size: 0.875rem; font-family: var(--font-mono); }
.check-optional {
    background: rgba(138, 148, 166, 0.15);
    color: var(--text-secondary);
    font-size: 0.7rem;
    padding: 0.125rem 0.5rem;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========================================================================== */
/* FORMS                                                                      */
/* ========================================================================== */
.installer-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
}

.form-group input,
.form-group select {
    background: var(--background);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    color: var(--text);
    font-size: 1rem;
    font-family: var(--font-sans);
    transition: all 0.2s ease;
    min-height: 44px;
}
.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(31, 111, 255, 0.15);
}

.form-group small {
    color: var(--text-tertiary);
    font-size: 0.8rem;
}

.form-group-small {
    max-width: 140px;
    min-width: 0;
}

/* ========================================================================== */
/* BUTTONS                                                                    */
/* ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    min-height: 44px;
}

.btn-primary {
    background: var(--primary);
    color: var(--text);
    box-shadow: 0 4px 12px rgba(31, 111, 255, 0.3);
}
.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(31, 111, 255, 0.4);
}

.btn-secondary {
    background: var(--surface-elevated);
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-secondary:hover {
    background: var(--surface);
    border-color: var(--border-hover);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.05rem;
}

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

.installer-actions {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

/* ========================================================================== */
/* MESSAGES                                                                   */
/* ========================================================================== */
.installer-message {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    font-weight: 500;
    border-left: 3px solid transparent;
}
.installer-message.success {
    background: rgba(30, 215, 96, 0.1);
    border-left-color: var(--success);
    color: var(--success);
}
.installer-message.error {
    background: rgba(255, 59, 59, 0.1);
    border-left-color: var(--danger);
    color: #ff7676;
}
.installer-message.warning {
    background: rgba(255, 176, 32, 0.1);
    border-left-color: var(--warning);
    color: #ffca6b;
}

/* ========================================================================== */
/* SUMMARY (STEP 6)                                                           */
/* ========================================================================== */
.summary-box {
    background: var(--surface-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.summary-box h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.summary-section {
    margin-bottom: 1.25rem;
}
.summary-section:last-child { margin-bottom: 0; }

.summary-label {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}
.summary-row:last-child { border-bottom: none; }
.summary-row span { color: var(--text-secondary); }
.summary-row strong { font-family: var(--font-mono); font-size: 0.875rem; }

/* Spinner */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--text);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ========================================================================== */
/* DONE (STEP 7)                                                              */
/* ========================================================================== */
.success-hero {
    text-align: center;
    padding: 2rem 0;
    margin-bottom: 2rem;
}
.success-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 32px rgba(30, 215, 96, 0.5));
    animation: bounce 1s ease;
}
@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    25%      { transform: translateY(-20px); }
    50%      { transform: translateY(0); }
    75%      { transform: translateY(-10px); }
}
.success-hero h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.success-subtitle { color: var(--text-secondary); font-size: 1.1rem; }

.next-steps { margin-bottom: 2rem; }
.next-steps h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--primary);
}

.next-step-card {
    display: flex;
    gap: 1rem;
    background: var(--surface-elevated);
    padding: 1.25rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin-bottom: 0.75rem;
}

.step-number-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
}

.next-step-card strong { display: block; margin-bottom: 0.25rem; }
.next-step-card p { color: var(--text-secondary); margin-bottom: 0.75rem; font-size: 0.9rem; }
.next-step-card code {
    background: var(--background);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--primary);
}
.next-step-card small { color: var(--text-tertiary); font-size: 0.8rem; }

.next-step-hint {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.8rem;
    color: var(--text-tertiary);
}
.next-step-hint--warn {
    color: var(--warning);
}

.final-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.installer-footer-note {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

/* ========================================================================== */
/* FOOTER                                                                     */
/* ========================================================================== */
.installer-footer {
    text-align: center;
    padding: 2rem 0 1rem;
    color: var(--text-tertiary);
    font-size: 0.8rem;
}

/* ========================================================================== */
/* RESPONSIVE                                                                 */
/* ========================================================================== */
@media (max-width: 640px) {
    .installer-wrapper { padding: 1rem; }
    .installer-main { padding: 1.5rem; }
    .step-nav { padding: 0; gap: 0.25rem; }
    .step-label { display: none; }
    .step-circle { width: 36px; height: 36px; }
    .welcome-features { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .installer-actions { flex-direction: column-reverse; }
    .installer-actions .btn { width: 100%; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .particles, .logo-icon, .welcome-icon, .success-icon, .step.active .step-circle {
        animation: none !important;
    }
}