:root {
    --title-color: #EEDF7A;
    --subtitle-color: #D8A25E;
    --bg-body: #1d1b1b;
    --bg-card: #f5f4f0;
    --text-dark: #1a1a1a;
    --text-muted-dark: rgba(26, 26, 26, 0.55);
    --text-light: #f0f0f0;
    --text-muted-light: rgba(240, 240, 240, 0.60);
    --bg-instruction: rgba(255, 255, 255, 0.055);
    --border-instruction: rgba(255, 255, 255, 0.10);
    --danger: #e53535;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-btn: 10px;
    --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.45), 0 2px 8px rgba(0, 0, 0, 0.25);
    --transition: 0.18s ease;
}

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

body { font-family: "Work Sans", sans-serif; background-color: var(--bg-body); margin: 0; min-height: 100vh; }
button, input, select, textarea { font-family: inherit; font-size: 100%; }

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 20% 30%, rgba(238,223,122,0.05) 0%, transparent 70%),
        radial-gradient(ellipse 50% 40% at 80% 70%, rgba(216,162,94,0.04) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.main-container { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 100vh; padding: 32px 24px; gap: 28px; width: 100%; }

.page-header { text-align: center; }
.title { color: var(--title-color); font-size: 2.4rem; font-weight: 800; letter-spacing: -0.01em; line-height: 1.1; }
.sub-title { color: var(--subtitle-color); font-size: 1rem; font-weight: 500; margin-top: 6px; opacity: 0.9; }

.page-layout { display: flex; align-items: flex-start; gap: 32px; width: 100%; max-width: 980px; }

.instructions-column { flex: 1 1 0; display: flex; flex-direction: column; gap: 14px; min-width: 0; }

.instruction-card { background: var(--bg-instruction); border: 1px solid var(--border-instruction); border-radius: var(--radius); padding: 18px 20px; display: flex; flex-direction: column; gap: 10px; transition: background var(--transition); }
.instruction-card:hover { background: rgba(255,255,255,0.08); }

.instruction-header { display: flex; align-items: center; gap: 10px; }
.instruction-icon { font-size: 1.1rem; flex-shrink: 0; }

.instruction-card h3 { font-size: 0.92rem; font-weight: 700; color: var(--title-color); margin: 0; text-transform: uppercase; letter-spacing: 0.06em; }
.instruction-card p { font-size: 0.88rem; color: var(--text-muted-light); line-height: 1.65; margin: 0; }
.instruction-card p + p { margin-top: 6px; }
.instruction-card strong { color: var(--text-light); font-weight: 600; }
.instruction-card em { color: var(--subtitle-color); font-style: normal; font-weight: 600; }

.login-container { flex: 0 0 360px; min-width: 0; display: flex; flex-direction: column; gap: 0; }

.form-container { display: flex; flex-direction: column; align-items: center; background-color: var(--bg-card); border-radius: var(--radius); width: 100%; padding: 28px 24px; gap: 14px; box-shadow: var(--shadow-card); border: 1px solid rgba(255,255,255,0.06); }

.form-items { display: flex; flex-direction: column; align-items: stretch; width: 100%; gap: 8px; }
.initial { margin-bottom: 4px; }

label { font-size: 0.72rem; font-weight: 700; color: var(--text-muted-dark); text-transform: uppercase; letter-spacing: 0.07em; }

input[type="text"] { box-sizing: border-box; border: 1.5px solid rgba(0,0,0,0.14); border-radius: var(--radius-sm); padding: 11px 14px; width: 100%; font-size: 1rem; background: white; color: var(--text-dark); transition: border-color var(--transition), box-shadow var(--transition); }
input[type="text"]:focus { outline: none; border-color: #3EC9F1; box-shadow: 0 0 0 3px rgba(62,201,241,0.18); }
input[type="text"]::placeholder { color: rgba(26,26,26,0.28); }

input[type="submit"] { box-sizing: border-box; cursor: pointer; width: 100%; padding: 11px; color: white; background: linear-gradient(135deg, #2a2727, #3c3838); border-radius: var(--radius-btn); border: none; font-weight: 700; font-size: 0.95rem; letter-spacing: 0.02em; transition: all var(--transition); }
input[type="submit"]:hover { background: linear-gradient(135deg, #3c3838, #4a4646); transform: translateY(-1px); box-shadow: 0 4px 16px rgba(0,0,0,0.28); }
input[type="submit"]:active { transform: translateY(0); box-shadow: none; }

.hr-text {
    width: 100%; line-height: 1em; position: relative; outline: 0; border: 0; text-align: center; height: 1.5em;
    &:before { content: ''; background: linear-gradient(to right, transparent, rgba(0,0,0,0.14), transparent); position: absolute; left: 0; top: 50%; width: 100%; height: 1px; }
    &:after { content: attr(data-content); position: relative; display: inline-block; padding: 0 0.6em; line-height: 1.5em; color: var(--text-muted-dark); background-color: var(--bg-card); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.08em; }
}

.error-container { width: 100%; min-height: 0; }
.error-item { color: var(--danger); font-size: 0.88rem; font-weight: 500; padding: 8px 12px; background: rgba(229,53,53,0.08); border-left: 3px solid var(--danger); border-radius: 6px; margin: 0; }

@media (max-width: 768px) {
    .main-container { padding: 24px 16px; gap: 20px; justify-content: flex-start; padding-top: 32px; }
    .title { font-size: 2rem; }
    .page-layout { flex-direction: column-reverse; align-items: center; gap: 20px; }
    .login-container { flex: none; width: 100%; max-width: 440px; }
    .instructions-column { width: 100%; max-width: 440px; }
    .form-container { padding: 24px 20px; }
    input[type="text"], input[type="submit"] { min-height: 46px; font-size: 1rem; }
}