/* Trang đăng nhập và trang báo mất kết nối của app SPIDER trên điện thoại. Luôn nền tối như logo. */
:root { --bg: #07080D; --panel: #0F121B; --line: #222838; --text: #EEF1F7; --dim: #9AA1B4; --brand: #FF3D5A; --act: #8B5CF6; --act-bg: rgba(139, 92, 246, 0.14); --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
* { box-sizing: border-box; }
body.gate { margin: 0; min-height: 100vh; min-height: 100dvh; display: grid; place-items: center; padding: max(16px, env(safe-area-inset-top)) 16px max(16px, env(safe-area-inset-bottom)); background: radial-gradient(circle at 50% 30%, rgba(255, 61, 90, 0.10), transparent 60%), var(--bg); color: var(--text); font: 15px/1.5 -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
.gate-card { width: min(380px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 28px 22px; text-align: center; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5); }
.gate-logo { border-radius: 18px; box-shadow: 0 0 30px rgba(255, 61, 90, 0.35); }
.gate h1 { margin: 12px 0 0; font: 800 26px var(--mono); letter-spacing: 0.3em; text-indent: 0.3em; }
.gate-sub { margin: 2px 0 22px; font: 600 10px var(--mono); letter-spacing: 0.16em; color: var(--brand); }
.gate form { text-align: left; }
.gate label { display: block; font-size: 13px; color: var(--dim); margin-bottom: 6px; }
.gate input { width: 100%; font: inherit; font-size: 16px; color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 12px 13px; outline: none; }
.gate input:focus { border-color: var(--act); box-shadow: 0 0 0 3px var(--act-bg); }
.gate-btn { display: block; width: 100%; margin-top: 14px; padding: 12px; border: 0; border-radius: 12px; background: var(--brand); color: #fff; font: inherit; font-size: 15px; font-weight: 700; text-align: center; text-decoration: none; cursor: pointer; }
.gate-btn:disabled { opacity: 0.6; }
.gate-msg { min-height: 1.5em; margin: 10px 0 0; color: var(--brand); font-size: 14px; }
.gate-note { margin: 16px 0 0; font-size: 13px; color: var(--dim); }
.gate-list { text-align: left; color: var(--dim); font-size: 14px; padding-left: 20px; }
.gate-list li { margin: 6px 0; }
.gate-opt { color: var(--dim); font-weight: 400; font-size: 12px; }
.gate-gap { margin-top: 12px; }