/* Perdeci ERP — giriş ekranı. Marka: lacivert zemin, mavi fon perde, altın korniş (favicon.svg ile aynı palet).
   Dış font/CDN yok; görsel kimlik CSS gradyanları ve yerel SVG ile çizilir. */
:root {
    --navy-950: #070d1a;
    --navy-900: #0b1426;
    --navy-850: #0f1b33;
    --navy-800: #13223f;
    --navy-700: #1e3a8a;
    --line: rgba(148, 163, 184, 0.18);
    --line-strong: rgba(148, 163, 184, 0.34);
    --text: #f1f5f9;
    --muted: #a3b1c6;
    --gold: #f5b83d;
    --gold-strong: #f59e0b;
    --gold-soft: #fde68a;
    --blue: #60a5fa;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --danger-line: rgba(248, 113, 113, 0.55);
    --danger-text: #fecaca;
    --focus: #fbbf24;
    --radius: 14px;
    color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; }

.login-body {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(12px, 3vw, 40px);
    background:
        radial-gradient(1200px 600px at 10% -10%, rgba(30, 58, 138, 0.45), transparent 60%),
        radial-gradient(900px 500px at 110% 110%, rgba(245, 184, 61, 0.10), transparent 60%),
        var(--navy-950);
    color: var(--text);
    font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.login-shell {
    width: 100%;
    max-width: 1120px;
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    background: linear-gradient(180deg, rgba(19, 34, 63, 0.92), rgba(11, 20, 38, 0.96));
    border: 1px solid var(--line);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* ---------------------------------------------------------------- Sol: marka */
.login-brand {
    position: relative;
    padding: clamp(32px, 4.5vw, 56px);
    background: linear-gradient(160deg, var(--navy-800) 0%, var(--navy-900) 70%);
    border-right: 1px solid var(--line);
    overflow: hidden;
}

/* Fon perde dökümü: yumuşak dikey pileler (görsel dosya yok). */
.brand-folds {
    position: absolute;
    inset: 0 auto 0 0;
    width: 72px;
    background:
        repeating-linear-gradient(90deg,
            rgba(96, 165, 250, 0.10) 0px, rgba(96, 165, 250, 0.02) 9px,
            rgba(15, 27, 51, 0.0) 12px, rgba(96, 165, 250, 0.08) 18px);
    mask-image: linear-gradient(90deg, #000 30%, transparent);
    -webkit-mask-image: linear-gradient(90deg, #000 30%, transparent);
    pointer-events: none;
}

.brand-inner { position: relative; display: flex; flex-direction: column; height: 100%; }

.brand-logo { display: flex; align-items: center; gap: 16px; }
.brand-logo img { flex: none; border-radius: 14px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35); }

.brand-name { margin: 0; font-size: clamp(28px, 3vw, 36px); font-weight: 750; letter-spacing: -0.02em; line-height: 1.1; }
.brand-name span { color: var(--gold); }
.brand-tagline { margin: 4px 0 0; color: var(--muted); font-size: 15px; }

.brand-rule {
    height: 1px;
    margin: 28px 0 32px;
    background: linear-gradient(90deg, transparent, var(--gold) 20%, rgba(245, 184, 61, 0.35) 80%, transparent);
}

.brand-headline { margin: 0 0 10px; font-size: clamp(22px, 2.3vw, 28px); font-weight: 700; letter-spacing: -0.01em; line-height: 1.25; }
.brand-lead { margin: 0 0 28px; color: var(--muted); max-width: 46ch; }

.brand-features { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.brand-features li {
    display: flex; gap: 14px; align-items: flex-start;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.025);
}
.brand-features strong { display: block; font-size: 15px; font-weight: 650; }
.brand-features div span { display: block; color: var(--muted); font-size: 14px; }

.feature-icon {
    flex: none;
    display: grid; place-items: center;
    width: 40px; height: 40px;
    border-radius: 12px;
    color: var(--gold);
    background: rgba(245, 184, 61, 0.10);
    border: 1px solid rgba(245, 184, 61, 0.25);
}

.brand-footer { margin: auto 0 0; padding-top: 28px; color: #7f8ea6; font-size: 13px; }

/* ---------------------------------------------------------------- Sağ: form */
.login-panel { display: flex; align-items: center; padding: clamp(28px, 4.5vw, 64px); }
.panel-inner { width: 100%; max-width: 420px; margin: 0 auto; }

.panel-mobile-brand { display: none; }

.login-panel h1 { margin: 0; font-size: clamp(28px, 3vw, 36px); font-weight: 750; letter-spacing: -0.02em; line-height: 1.15; }
.panel-lead { margin: 8px 0 28px; color: var(--muted); }

.login-alert {
    display: flex; gap: 10px; align-items: flex-start;
    margin-bottom: 20px;
    padding: 12px 14px;
    border: 1px solid var(--danger-line);
    border-radius: 12px;
    background: var(--danger-bg);
    color: var(--danger-text);
    font-size: 14px;
}
.login-alert svg { flex: none; margin-top: 1px; color: #f87171; }
.login-alert:focus { outline: none; }
.login-alert-text ul { margin: 0; padding: 0; list-style: none; }
.login-alert-text li + li { margin-top: 4px; }

.field { margin-bottom: 18px; }
.field label { display: block; margin-bottom: 8px; font-size: 14px; font-weight: 600; color: #dbe4f0; }

.input-wrap { position: relative; display: flex; align-items: center; }
.input-icon { position: absolute; left: 14px; color: #7f8ea6; pointer-events: none; }

.input-wrap input {
    width: 100%;
    min-height: 52px;
    padding: 12px 14px 12px 46px;
    border: 1px solid var(--line-strong);
    border-radius: 12px;
    background: rgba(7, 13, 26, 0.55);
    color: var(--text);
    font: inherit;
    font-size: 16px; /* iOS yakınlaştırmasını önler */
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.input-wrap input::placeholder { color: #66758c; }
.input-wrap input:hover { border-color: rgba(148, 163, 184, 0.5); }
.input-wrap input:focus { outline: none; border-color: var(--gold); box-shadow: 0 0 0 3px rgba(245, 184, 61, 0.28); }
.input-wrap input:focus-visible { outline: none; }
.input-wrap input[aria-invalid="true"], .input-wrap input.input-validation-error { border-color: var(--danger-line); }

.input-wrap input#Password { padding-right: 52px; }

.toggle-password {
    display: none; /* yalnız JS varsa gösterilir */
    position: absolute; right: 6px;
    width: 40px; height: 40px;
    place-items: center;
    border: 0; border-radius: 10px;
    background: transparent;
    color: #9fb0c8;
    cursor: pointer;
}
.js .toggle-password { display: grid; }
.toggle-password:hover { color: var(--text); background: rgba(255, 255, 255, 0.06); }
.toggle-password:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; }
.toggle-password .eye-closed { display: none; }
.toggle-password[aria-pressed="true"] .eye-open { display: none; }
.toggle-password[aria-pressed="true"] .eye-closed { display: block; }

.field-error { display: block; min-height: 0; margin-top: 6px; color: var(--danger-text); font-size: 13px; }
.field-error:empty { display: none; }
.caps-warning { display: block; margin-top: 6px; color: var(--gold-soft); font-size: 13px; }
.caps-warning[hidden] { display: none; }

.form-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 4px 0 22px; }

.remember { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; font-size: 15px; color: #dbe4f0; }
.remember input {
    width: 20px; height: 20px; margin: 0;
    accent-color: var(--gold);
    cursor: pointer;
}
.remember input:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.submit-btn {
    position: relative;
    width: 100%;
    min-height: 54px;
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    border: 0;
    border-radius: 12px;
    background: linear-gradient(180deg, #fcd34d, var(--gold) 55%, var(--gold-strong));
    color: #1a1305;
    font: inherit;
    font-size: 17px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 10px 24px rgba(245, 158, 11, 0.22);
    transition: filter 0.15s ease;
}
.submit-btn:hover { filter: brightness(1.05); }
.submit-btn:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.submit-btn[aria-busy="true"] { cursor: progress; filter: saturate(0.8); }
.submit-btn:disabled { cursor: progress; }

.spinner {
    display: none;
    width: 18px; height: 18px;
    border: 2.5px solid rgba(26, 19, 5, 0.25);
    border-top-color: #1a1305;
    border-radius: 50%;
    animation: login-spin 0.8s linear infinite;
}
.submit-btn[aria-busy="true"] .spinner { display: inline-block; }
@keyframes login-spin { to { transform: rotate(360deg); } }

.help-text { margin: 18px 0 0; text-align: center; color: var(--muted); font-size: 14px; }

/* ---------------------------------------------------------------- Duyarlı düzen */
@media (max-width: 900px) {
    .login-shell { grid-template-columns: 1fr; max-width: 560px; }
    .login-brand { display: none; }
    .panel-mobile-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; font-size: 22px; font-weight: 750; }
    .panel-mobile-brand img { border-radius: 10px; }
    .panel-mobile-brand span span { color: var(--gold); }
}

@media (max-width: 480px) {
    .login-body { padding: 0; align-items: stretch; }
    .login-shell { border-radius: 0; border: 0; min-height: 100vh; min-height: 100dvh; box-shadow: none; }
    .login-panel { padding: 28px 20px; align-items: flex-start; }
    .panel-lead { margin-bottom: 22px; }
}

@media (max-height: 640px) and (min-width: 901px) {
    .brand-features li { padding: 10px 14px; }
    .brand-rule { margin: 18px 0 20px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
}

@media (forced-colors: active) {
    .submit-btn, .input-wrap input { border: 1px solid CanvasText; }
}