/* ARYGAI Dashboard Installer — Design System
   Derived from ARYGAI IT Operations Center (arygai-system.css)
   Dark theme — professional, enterprise-grade, operational. */

:root {
    --arygai-bg: #1A1916;
    --arygai-surface: #2A2926;
    --arygai-surface2: #34312C;
    --arygai-surface3: #403B32;
    --arygai-surface4: #232220;
    --arygai-text: #918E86;
    --arygai-text2: #A8A298;
    --arygai-text3: #706B62;
    --arygai-ivory: #F7F3EB;
    --arygai-champagne: #8F8B7C;
    --arygai-champagne-hi: #D6D1C4;
    --arygai-ok: #5E8C6E;
    --arygai-ok-surface: #1A2E22;
    --arygai-warn: #B08D4F;
    --arygai-warn-surface: #2A2418;
    --arygai-err: #B45A54;
    --arygai-err-surface: #2E1A1A;
    --arygai-info: #7C8B99;
    --arygai-info-surface: #1A2028;
    --arygai-line: #1E1C18;
    --arygai-line-strong: #302E2A;
    --arygai-shadow: #101014;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--arygai-bg);
    color: var(--arygai-text);
    line-height: 1.5;
    min-height: 100vh;
    font-size: 13px;
}

.install-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--arygai-bg);
}

.install-card {
    max-width: 480px;
    width: 100%;
    background: var(--arygai-surface);
    border: 1px solid var(--arygai-line-strong);
    border-radius: 14px;
    padding: 40px 36px;
    box-shadow: 0 16px 48px rgba(16, 16, 20, .12);
}

.install-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.install-brand .brand-logo {
    height: 28px;
}

.brand-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--arygai-ivory);
}

.brand-sub {
    font-size: 12px;
    color: var(--arygai-text3);
    margin-left: 4px;
}

.install-divider {
    height: 1px;
    background: var(--arygai-line-strong);
    margin: 20px 0 24px;
}

.install-step {
    font-size: 10px;
    font-weight: 600;
    color: var(--arygai-champagne);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.install-card h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--arygai-ivory);
    margin: 0 0 8px;
}

.install-desc {
    font-size: 13px;
    color: var(--arygai-text3);
    margin: 0 0 24px;
}

.install-checklist {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
}

.install-checklist li {
    padding: 8px 0 8px 28px;
    position: relative;
    font-size: 13px;
    color: var(--arygai-text);
}

.install-checklist li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    color: var(--arygai-ok);
    font-weight: 700;
}

.check-list { margin-bottom: 24px; }

.check-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid var(--arygai-line);
}

.check-item:last-child { border-bottom: none; }

.check-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.check-item.ok .check-icon {
    background: var(--arygai-ok-surface);
    color: var(--arygai-ok);
}

.check-item.fail .check-icon {
    background: var(--arygai-err-surface);
    color: var(--arygai-err);
}

.check-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--arygai-text);
}

.check-help {
    font-size: 11px;
    color: var(--arygai-text3);
    margin-top: 2px;
}

.install-success {
    color: var(--arygai-ok);
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 16px;
}

.install-fail {
    color: var(--arygai-err);
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 16px;
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--arygai-champagne);
    color: var(--arygai-bg);
    padding: 10px 24px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 13px;
    font-family: inherit;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: opacity .15s;
}

.btn-primary:hover { opacity: .85; }

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    color: var(--arygai-text);
    border: 1px solid var(--arygai-line-strong);
    padding: 10px 24px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s, color .15s;
}

.btn-secondary:hover {
    background: var(--arygai-surface2);
    color: var(--arygai-ivory);
}

/* Forms */
.form-group { margin-bottom: 16px; }

.form-label {
    display: block;
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--arygai-text2);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.form-input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--arygai-line-strong);
    border-radius: 4px;
    font-size: 13px;
    font-family: inherit;
    background: var(--arygai-surface2);
    color: var(--arygai-ivory);
    transition: border-color .15s;
}

.form-input:focus {
    outline: none;
    border-color: var(--arygai-champagne);
}

.form-input::placeholder {
    color: var(--arygai-text3);
}

.form-hint {
    margin-top: 4px;
    font-size: 11px;
    color: var(--arygai-text3);
}

/* Alerts */
.alert-error {
    background: var(--arygai-err-surface);
    color: var(--arygai-err);
    padding: 12px 16px;
    border-radius: 4px;
    border: 1px solid rgba(180, 90, 84, .2);
    margin-bottom: 20px;
    font-size: 13px;
}

.alert-ok {
    background: var(--arygai-ok-surface);
    color: var(--arygai-ok);
    padding: 12px 16px;
    border-radius: 4px;
    border: 1px solid rgba(94, 140, 110, .2);
    margin-bottom: 20px;
    font-size: 13px;
}

/* Info grid */
.info-grid { margin-bottom: 16px; }

.info-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--arygai-line);
    font-size: 13px;
}

.info-row:last-child { border-bottom: none; }

.info-label { color: var(--arygai-text3); }

.info-value { font-weight: 500; color: var(--arygai-text); }

.info-value.ok { color: var(--arygai-ok); }

/* Responsive */
@media (max-width: 540px) {
    .install-card { padding: 28px 24px; }
}