:root {
    /* Nowoczesna paleta kolorów */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-1: #6366f1;
    --accent-2: #8b5cf6;
    --gradient-1: linear-gradient(135deg, var(--accent-1) 0%, var(--accent-2) 100%);
    --gradient-2: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    --error: #ef4444;
    --success: #10b981;
    --border: rgba(148, 163, 184, 0.1);
    /* Zoptymalizowane cienie */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.12), 0 2px 4px -1px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.15), 0 4px 6px -2px rgba(0, 0, 0, 0.1);
    /* Nowe zmienne dla animacji */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --border-radius-sm: 12px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
}

.captcha-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
}

.captcha-container {
    width: min(90%, 400px);
    background: var(--gradient-2);
    border: 1px solid var(--border);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(1);
    animation: modalAppear 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.close-button {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 2.5rem;
    height: 2.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 1.25rem;
    display: grid;
    place-items: center;
    cursor: pointer;
    transition: var(--transition-normal);
}

    .close-button:hover {
        background: var(--accent-1);
        color: var(--text-primary);
        transform: rotate(90deg);
    }

.captcha-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

    .captcha-header h2 {
        font-size: 1.5rem;
        font-weight: 700;
        background: var(--gradient-1);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
        margin-bottom: 0.5rem;
    }

    .captcha-header p {
        color: var(--text-secondary);
        font-size: 0.875rem;
        line-height: 1.5;
    }

.captcha-box {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius-md);
    position: relative;
    border: 1px solid var(--border);
    overflow: hidden;
    margin: 1rem 0;
}

.captcha-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(45deg, rgba(99, 102, 241, 0.05) 25%, transparent 25%), linear-gradient(-45deg, rgba(99, 102, 241, 0.05) 25%, transparent 25%), linear-gradient(45deg, transparent 75%, rgba(99, 102, 241, 0.05) 75%), linear-gradient(-45deg, transparent 75%, rgba(99, 102, 241, 0.05) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    animation: movePattern 30s linear infinite;
}

.captcha-text {
    font-family: 'Fira Code', monospace;
    font-size: 2rem;
    letter-spacing: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    text-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
    position: relative;
    z-index: 2;
}

.input-field {
    width: 100%;
    padding: 0.75rem 0rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-weight: 500;
    letter-spacing: 0.25rem;
    text-align: center;
    transition: var(--transition-normal);
    margin-bottom: 1rem;
}

    .input-field:focus {
        border-color: var(--accent-1);
        box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
        outline: none;
    }

    .input-field::placeholder {
        color: var(--text-secondary);
        opacity: 0.7;
        letter-spacing: normal;
        font-weight: 400;
    }

.button-group {
    display: grid;
    gap: 0.75rem;
}

.button {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
}

    .button.primary {
        background: var(--gradient-1);
        color: white;
        box-shadow: var(--shadow-sm);
    }

        .button.primary:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

    .button.secondary {
        background: var(--bg-secondary);
        border: 1px solid var(--border);
        color: var(--text-primary);
    }

        .button.secondary:hover {
            background: var(--gradient-2);
            border-color: var(--accent-1);
        }

.message {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    margin-top: 1rem;
    display: none;
    text-align: center;
    font-weight: 500;
    font-size: 0.875rem;
    animation: messageAppear 0.3s ease;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.success-message {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.timer {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--bg-primary);
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border);
}

@keyframes modalAppear {
    from {
        opacity: 0;
        transform: translate(-50%, -48%) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

@keyframes messageAppear {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes movePattern {
    from {
        background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    }

    to {
        background-position: 40px 40px, 40px 50px, 50px 30px, 30px 40px;
    }
}

@media (max-width: 768px) {
    .captcha-container {
        width: min(95%, 380px);
        padding: 1.25rem;
    }

    .captcha-text {
        font-size: 1.5rem;
        letter-spacing: 0.375rem;
    }
}

@media (max-width: 480px) {
    .captcha-container {
        width: calc(100% - 2rem);
        padding: 1rem;
    }

    .captcha-box {
        padding: 1rem;
        margin: 0.75rem 0;
    }

    .captcha-text {
        font-size: 1.25rem;
        letter-spacing: 0.25rem;
    }

    .close-button {
        width: 2rem;
        height: 2rem;
        font-size: 1rem;
    }
}