@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;600;700&family=JetBrains+Mono:wght@500&display=swap');

:root {
            --bg: #070a0f;
            --surface: #0f141f;
            --surface-card: #141b2a;
            --surface-hover: #1b2438;
            --line: rgba(255, 255, 255, 0.08);
            --accent: #26a3d6;
            --accent-glow: rgba(38, 163, 214, 0.3);
            --fg: #f1f5f9;
            --muted: #94a3b8;
            --font: 'Outfit', sans-serif;
            --mono: 'JetBrains Mono', monospace;
        }

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

        html, body {
            overflow-x: hidden;
            width: 100%;
            max-width: 100%;
        }

        body {
            background-color: var(--bg);
            color: var(--fg);
            font-family: var(--font);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: clamp(14px, 3.5vw, 24px);
            position: relative;
        }

        /* Subtle Animated Background */
        .bg-glow-wrap {
            position: fixed;
            inset: 0;
            overflow: hidden;
            pointer-events: none;
            z-index: 0;
        }

        .bg-glow {
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(38, 163, 214, 0.12) 0%, transparent 70%);
            filter: blur(80px);
            pointer-events: none;
        }
        .bg-glow-1 { top: -100px; left: -100px; }
        .bg-glow-2 { bottom: -150px; right: -100px; background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, transparent 70%); }

        .auth-container {
            position: relative;
            z-index: 1;
            width: 100%;
            max-width: 440px;
        }

        .auth-card {
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: clamp(16px, 2.5vw, 20px);
            padding: clamp(28px, 6vw, 40px) clamp(18px, 5vw, 36px);
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(16px);
        }

        .brand-header {
            text-align: center;
            margin-bottom: 30px;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: clamp(22px, 5vw, 26px);
            font-weight: 900;
            color: #fff;
            text-decoration: none;
            letter-spacing: -0.02em;
            margin-bottom: 8px;
        }

        .brand-logo i {
            color: var(--accent);
            filter: drop-shadow(0 0 10px var(--accent));
        }

        .brand-subtitle {
            font-size: 13px;
            color: var(--muted);
        }

        .auth-tabs {
            display: flex;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 12px;
            padding: 4px;
            margin-bottom: 26px;
            border: 1px solid var(--line);
        }

        .auth-tab {
            flex: 1;
            text-align: center;
            padding: 10px;
            font-size: 14px;
            font-weight: 700;
            color: var(--muted);
            border-radius: 8px;
            text-decoration: none;
            transition: all 0.2s ease;
        }

        .auth-tab.active {
            background: var(--surface-card);
            color: var(--accent);
            box-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--fg);
            margin-bottom: 8px;
        }

        .input-wrap {
            position: relative;
        }

        .input-wrap i {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--muted);
            font-size: 15px;
        }

        .form-control {
            width: 100%;
            padding: 13px 16px 13px 44px;
            background: var(--surface-card);
            border: 1px solid var(--line);
            border-radius: 12px;
            color: #fff;
            font-family: var(--font);
            font-size: 14px;
            outline: none;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .form-control:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-glow);
        }

        .form-options {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
            font-size: 13px;
        }

        .checkbox-label {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--muted);
            cursor: pointer;
        }

        .checkbox-label input {
            accent-color: var(--accent);
            cursor: pointer;
        }

        .btn-submit {
            width: 100%;
            padding: 13px;
            background: var(--accent);
            color: #04201c;
            border: none;
            border-radius: 12px;
            font-family: var(--font);
            font-size: 15px;
            font-weight: 800;
            cursor: pointer;
            box-shadow: 0 4px 20px var(--accent-glow);
            transition: transform 0.15s ease, filter 0.15s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-submit:hover {
            transform: translateY(-1px);
            filter: brightness(1.1);
        }

        .alert-error {
            background: rgba(239, 68, 68, 0.12);
            border: 1px solid rgba(239, 68, 68, 0.3);
            border-radius: 10px;
            padding: 12px 14px;
            font-size: 13px;
            color: #f87171;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .auth-footer {
            margin-top: 24px;
            text-align: center;
            font-size: 13px;
            color: var(--muted);
        }

        .auth-footer a {
            color: var(--accent);
            text-decoration: none;
            font-weight: 700;
        }

        .auth-footer a:hover {
            text-decoration: underline;
        }