:root {
            --primary: #00c7be;
            --primary-dark: #00a89c;
            --secondary: #5e5ce6;
            --accent: #30d158;
            --text-dark: #000000;
            --text-gray: #636366;
            --text-light: rgba(255,255,255,0.7);
            --text-muted: rgba(255,255,255,0.5);
            --bg-primary: #000000;
            --bg-secondary: #1c1c1e;
            --bg-tertiary: #2c2c2e;
            --glass: rgba(255,255,255,0.08);
            --glass-border: rgba(255,255,255,0.12);
            --radius: 16px;
            --radius-lg: 24px;
        }

        [data-theme="light"] {
            --bg-primary: #f5f7fa;
            --bg-secondary: #ffffff;
            --glass: rgba(255,255,255,0.85);
            --glass-border: rgba(0,0,0,0.1);
            --text-dark: #1a1a1a;
            --text-light: rgba(0,0,0,0.7);
            --text-muted: rgba(0,0,0,0.5);
        }

        body {
            
            min-height: 100vh;
            background: var(--bg-primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            position: relative;
            overflow: hidden;
        }

        /* Floating Orbs Background */
        .floating-orbs {
            position: fixed;
            inset: 0;
            z-index: 0;
            pointer-events: none;
            overflow: hidden;
        }

        .orb {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.35;
            animation: orbFloat 20s ease-in-out infinite;
        }

        .orb-1 {
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(0,199,190,0.4) 0%, transparent 70%);
            top: 10%;
            left: -5%;
        }

        .orb-2 {
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(94,92,230,0.35) 0%, transparent 70%);
            top: 50%;
            right: -5%;
            animation-delay: -8s;
        }

        .orb-3 {
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(191,90,242,0.3) 0%, transparent 70%);
            bottom: 15%;
            left: 25%;
            animation-delay: -15s;
        }

        @keyframes orbFloat {
            0%, 100% { transform: translate(0, 0) rotate(0deg); }
            25% { transform: translate(30px, -40px) rotate(5deg); }
            50% { transform: translate(-20px, 30px) rotate(-5deg); }
            75% { transform: translate(15px, 20px) rotate(3deg); }
        }

        .glass-card {
            position: relative;
            z-index: 1;
            background: var(--glass);
            backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 48px;
            width: 100%;
            max-width: 440px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
        }

        [data-theme="light"] .glass-card {
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
        }

        .logo {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            margin-bottom: 36px;
        }

        .logo-icon {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: white;
            box-shadow: 0 8px 24px rgba(0,199,190,0.3);
        }

        .logo-text {
            font-size: 28px;
            font-weight: 700;
            background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.7) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        [data-theme="light"] .logo-text {
            background: linear-gradient(135deg, #1a1a1a 0%, #444 100%);
            -webkit-background-clip: text;
        }

        .title {
            text-align: center;
            margin-bottom: 32px;
            color: var(--text-light);
            font-size: 22px;
            font-weight: 600;
        }

        [data-theme="light"] .title {
            color: var(--text-dark);
        }

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

        .form-label {
            display: block;
            margin-bottom: 10px;
            color: var(--text-muted);
            font-size: 14px;
            font-weight: 500;
        }

        .form-input {
            width: 100%;
            padding: 16px 18px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            border-radius: 14px;
            color: white;
            font-size: 15px;
            transition: all 0.3s;
            font-family: inherit;
        }

        [data-theme="light"] .form-input {
            background: rgba(0, 0, 0, 0.04);
            border-color: rgba(0, 0, 0, 0.1);
            color: #1a1a1a;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            background: rgba(255, 255, 255, 0.1);
            box-shadow: 0 0 0 4px rgba(0,199,190,0.15);
        }

        [data-theme="light"] .form-input:focus {
            background: rgba(0, 0, 0, 0.06);
        }

        .form-input::placeholder {
            color: rgba(255, 255, 255, 0.3);
        }

        [data-theme="light"] .form-input::placeholder {
            color: rgba(0, 0, 0, 0.3);
        }

        .input-group {
            display: flex;
            gap: 12px;
        }

        .input-group .form-input {
            flex: 1;
        }

        .btn {
            width: 100%;
            padding: 16px 24px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border: none;
            border-radius: 14px;
            color: black;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            font-family: inherit;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0, 199, 190, 0.4);
        }

        .btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        .btn-secondary {
            background: var(--glass);
            border: 1px solid var(--glass-border);
            color: white;
        }

        [data-theme="light"] .btn-secondary {
            background: rgba(0, 0, 0, 0.05);
            color: #1a1a1a;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.15);
        }

        [data-theme="light"] .btn-secondary:hover {
            background: rgba(0, 0, 0, 0.1);
        }

        .error {
            background: rgba(248, 113, 113, 0.15);
            border: 1px solid rgba(248, 113, 113, 0.3);
            color: #f87171;
            padding: 14px 18px;
            border-radius: 12px;
            margin-bottom: 20px;
            font-size: 14px;
            display: none;
            animation: shake 0.5s ease;
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-5px); }
            75% { transform: translateX(5px); }
        }

        .error.show { display: block; }

        .success {
            background: rgba(52, 211, 153, 0.15);
            border: 1px solid rgba(52, 211, 153, 0.3);
            color: #34d399;
            padding: 14px 18px;
            border-radius: 12px;
            margin-bottom: 20px;
            font-size: 14px;
            display: none;
        }

        .success.show { display: block; }

        .footer {
            text-align: center;
            margin-top: 28px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .footer a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s;
        }

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

        .hidden { display: none; }

        .back-icon {
            position: fixed;
            top: 20px;
            left: 20px;
            width: 44px;
            height: 44px;
            background: var(--glass);
            backdrop-filter: blur(10px);
            border: 1px solid var(--glass-border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 18px;
            cursor: pointer;
            transition: all 0.3s;
            z-index: 100;
            text-decoration: none;
        }

        .back-icon:hover {
            background: var(--primary);
            color: black;
            border-color: var(--primary);
        }

        .theme-toggle {
            position: fixed;
            top: 20px;
            right: 20px;
            width: 44px;
            height: 44px;
            background: var(--glass);
            backdrop-filter: blur(10px);
            border: 1px solid var(--glass-border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 18px;
            cursor: pointer;
            transition: all 0.3s;
            z-index: 100;
        }

        .theme-toggle:hover {
            background: var(--primary);
            color: black;
            border-color: var(--primary);
        }

        @media (max-width: 480px) {
            .glass-card {
                padding: 32px 24px;
            }
            .logo-text {
                font-size: 22px;
            }
            .title {
                font-size: 18px;
            }
        }